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Chemical Bonding and Molecular Structure

Get chapter-wise JEE Main & Advanced questions with solutions

Q JEE MAIN 2026
Given below are two statements: Statement I: The number of species among $\mathrm{BF}_4^{-}, \mathrm{SiF}_4, \mathrm{XeF}_4$ and $\mathrm{SF}_4$, that have unequal...
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Q JEE MAIN_2026_
Match List - I with List - II according to shape. Choose the correct answer from the options given below...
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Q JEE MAIN 2026
Pair of species among the following having same bond order as well as paramagnetic character will be-
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Q JEE MAIN 2026
Among the following, the CORRECT combinations are A. $\mathrm{IF}_3 \rightarrow \mathrm{~T}$-shaped $\left(\mathrm{sp}^3 \mathrm{~d}\right)$ B. $\mathrm{IF}_5 \rightarrow$ Square pyramidal $\left(\mathrm{sp}^3 \mathrm{~d}^2\right)$...
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Q JEE MAIN 2026
Given below are statements about some molecules/ions. Identify the CORRECT statements. A. The dipole moment value of $\mathrm{NF}_3$ is higher...
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Q JEE MAIN 2026
Identify the molecule $(\mathrm{X})$ with maximum number of lone pairs of electrons (obtained using Lewis dot structure) among $...
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Q JEE MAIN 2026
Given below are two statements: Statement I: The correct order in terms of bond dissociation enthalpy is $\mathrm{Cl}_2>\mathrm{Br}_2>\mathrm{F}_2>\mathrm{I}_2$. Statement II:...
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Q JEE MAIN 2026
The correct increasing order of $\mathrm{C}-\mathrm{H}(\mathrm{A}), \mathrm{C}-\mathrm{O}(\mathrm{B}), \mathrm{C}=\mathrm{O}(\mathrm{C})$ and $C \equiv N(D)$ bonds in terms of covalent bond length is:
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Q JEE MAIN 2026
Among $\mathrm{H}_2 \mathrm{~S}, \mathrm{H}_2 \mathrm{O}, \mathrm{NF}_3, \mathrm{NH}_3$ and $\mathrm{CHCl}_3$, identify the molecule $(\mathrm{X})$ with lowest dipole moment value. The number...
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Q JEE MAIN 2020
If $\mathrm{AB}_4$ molecule is a polar molecule, a possible geometry of $A B_4$ is
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Q JEE MAIN 2020
The shape / structure of $\left[\mathrm{XeF}_5\right]^{-}$and $\mathrm{XeO}_3 \mathrm{~F}_2$, respectively, are
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Q JEE MAIN_2019_
During the change of $\mathrm{O}_2$ to $\mathrm{O}_2^{-}$, the incoming electron goes to the orbital:
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Q JEE MAIN 2020
The molecular geometry of SF6 is octahedral. What is the geometry of SF4 (including lone pair(s) of electrons, if any)?
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Q JEE MAIN_2019
The correct order of catenation is:
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Q JEE MAIN 2020
Match the type of interaction in column A with the distance dependence of their interaction energy in column B
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Q JEE MAIN 2019
Excessive release of $\mathrm{CO}_2$ into the atmosphere results in
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Q JEE MAIN 2019
Among the following, the molecule expected to be stabilized by anion formation is $\mathrm{C}_2, \mathrm{O}_2, \mathrm{NO}, \mathrm{F}_2$
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Q JEE MAIN_2019_
The oxoacid of sulphur that does not contain bond between sulphur atoms is :
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Q JEE MAIN 2019
In which of the following processes, the bond order has increased and paramagnetic character has changed to diamagnetic?
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Q JEE MAIN 2019
In which of the following processes, the bond order has increased and paramagnetic character has changed to diamagnetic?
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Q JEE MAIN 2019
The element that shows greater ability to form $p \pi-p \pi$ multiple bonds, is
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Q JEE MAIN 2019
The number of water molecule(s) not coordinated to copper ion directly in $\mathrm{CuSO}_4 \cdot 5 \mathrm{H}_2 \mathrm{O}$, is
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Q JEE MAIN 2020
Consider the following reaction : $\mathrm{N}_2 \mathrm{O}_4(\mathrm{~g}) \rightleftharpoons 2 \mathrm{NO}_2(\mathrm{~g}) ; \Delta \mathrm{H}^0=+58 \mathrm{~kJ}$ For each of the following cases...
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Q JEE MAIN 2019
The element that does NOT show catenation is
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Q JEE MAIN 2019
$\mathrm{C}_{60}$ , an allotrope of carbon contains
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Q JEE MAIN 2020
The potential energy curve for the $\mathrm{H}_2$ molecule as a function of internuclear distance is
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Q JEE MAIN 2020
The structure of PCl5 in the solid state is
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Q JEE MAIN 2020
The number of Cl = O bonds in perchloric acid is
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Q JEE MAIN 2019
The amphoteric hydroxide is
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Q JEE MAIN 2020
‘X’ melts at low temperature and is a bad conductor of electricity in both liquid and solid state. X is
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Q JEE MAIN 2020
The acidic, basic and amphoteric oxides, respectively, are
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Q JEE MAIN 2020
If the magnetic moment of a dioxygen species is 1.73 B.M, it may be
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Q JEE MAIN 2020
The number of bonds between sulphur and oxygen atoms in $\mathrm{S}_2 \mathrm{O}_8^{2-}$ and the number of bonds between sulphur and...
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Q JEE MAIN 2020
The predominant intermolecular forces present in ethyl acetate, a liquid, are
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Q JEE-MAIN 2020
The correct statement about probability density (except at infinite distance from nucleus) is
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Q JEE-MAIN 2020
The compound that has the largest H – M – H bond angle (M = N, O, S, C) is
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Q JEE MAIN 2019
The number of pentagons in $\mathrm{C}_{60}$ and trigons (triangles) in white phosphorus, respectively, are:
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Q JEE Main 2019
Two pi and half sigma bonds are present in
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Q JEE MAIN 2020
The intermolecular potential energy for the molecules A, B, C and D given below suggests that :
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Q JEE Main 2019
The type of hybridisation and number of lone pair(s) of electrons of $X e$ in $X e O F_4$, respectively,...
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Q JEE MAIN 2020
The first and second ionisation enthalpies of a metal are 496 and $4560 \mathrm{~kJ} \mathrm{~mol}^{-1}$, respectively. How many moles of...
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Q JEE MAIN 2020
Complexes (ML5) of metals Ni and Fe have ideal square pyramidal and trigonal bipyramidal geometries, respectively. The sum of the...
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Q JEE-MAIN 2020
$6.023 \times 10^{22}$ molecules are present in 10 g of a substance ' x '. The molarity of a solution...
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Q JEE-MAIN 2020
The incorrect statement is
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Q JEE MAIN 2019
The structures of beryllium chloride in the solid state and vapour phase, respectively, are
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Q JEE MAIN 2019
The correct statements among I to III are (I) Valence bond theory cannot explain the color exhibited by transition metal...
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Q JEE MAIN 2019
The amorphous form of silica is
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Q JEE MAIN 2021
The number of species having non–pyramidal shape among the following is
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Q JEE MAIN 2019
Among the following species, the diamagnetic molecule is
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Q JEE MAIN 2020
The dipole moments of $\mathrm{CCl}_4, \mathrm{CHCl}_3$ and $\mathrm{CH}_4$ are in the order :
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Q JEE MAIN 2020
The relative strength of interionic/ intermolecular forces in decreasing order is :
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Q JEE MAIN 2021
$$ \text { According to molecular orbital theory, the number of unpaired electron(s) in } \mathrm{O}_2^{2-} \text { is :...
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Q JEE MAIN 2021
The Born-Haber cycle for KCl is evaluated with the following data: $...
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Q JEE MAIN 2021
These are physical properties of an element (A) Sublimation enthalpy (B) Ionisation enthalpy (C) Hydration enthalpy (D) Electron gain enthalpy...
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Q JEE MAIN 2021
$\mathrm{AB}_3$ is an interhalogen T-shaped molecule. The number of lone pairs of electrons on A is $\_\_\_\_$ (Integer answer)
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Q JEE MAIN 2021
The number of S=O bonds present in sulphurous acid, peroxodisulphuric acid and pyrosulphuric acid, respectively are :
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Q JEE MAIN_2021
The total number of electrons in all bonding molecular orbitals of $\mathrm{O}_2^{2-}$ is $\_\_\_\_$ (Round off to the nearest integer)
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Q JEE MAIN 2021
In polythionic acid, $\mathrm{H}_2 \mathrm{~S}_{\mathrm{x}} \mathrm{O}_6(\mathrm{x}=3$ to 5$)$ the oxidation state(s) of sulphur is/are :
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Q JEE MAIN 2021`
The spin-only magnetic moment value of $\mathrm{B}_2^{\prime}$ species is $\_\_\_\_$ $\times 10^{-2} \mathrm{BM}$. (Nearest integer) $[$ Given: $\sqrt{3}=1.73]$
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Q JEE-MAIN 2021
The bond order and magnetic behaviour of $\mathrm{O}_2^{-}$ion are, respectively :
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Q _JEE MAIN_2021_
Number of Cl = O bonds in chlorous acid, chloric acid and perchloric acid respectively are:
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Q JEE-MAIN 2021
The interaction energy of London forces between two particles is proportional to $\mathrm{r}^{\mathrm{x}}$, where r is the distance between the...
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Q JEE-MAIN 2021
The spin-only magnetic moment value of $\mathrm{B}_2^{+}$species is $\_\_\_\_$ $\times 10^{-2}$ BM. (Nearest integer) $[$ Given: $\sqrt{3}=1.73]$
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Q JEE MAIN 2021
In which one of the following molecules strongest back donation of an electron pair from halide to boron is expected?
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Q JEE MAIN 2021
Match List–I with List–II : Choose the most appropriate answer from the options given below :
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Q JEE-MAIN 2021
The oxide without nitrogen-nitrogen bond is :
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Q JEE MAIN 2021
The number of hydrogen bonded water molecule(s) associated with stoichiometry $\mathrm{CuSO}_4 .5 \mathrm{H}_2 \mathrm{O}$ is $\_\_\_\_$ .
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Q JEE MAIN 2021
The number of lone pairs of electrons on the central I atom in $\mathrm{I}_3^{-}$is $\_\_\_\_$ .
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Q JEE MAIN 2021
Identify the species having one $\pi$-bond and maximum number of canonical forms from the following :
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Q JEE MAIN_2021
Given below are two statements: Statement I: $\left[\mathrm{Mn}(\mathrm{CN})_6\right]^{3-},\left[\mathrm{Fe}(\mathrm{CN})_6\right]^{3-}$ and $\left[\mathrm{Co}\left(\mathrm{C}_2 \mathrm{O}_4\right)_3\right]^{3-}$ are $d^2 \mathrm{sp}^3$ hybridised. Statement Il: $\left[\mathrm{MnCl}_6\right]^{3-}$ and $\left[\mathrm{FeF}_6\right]^{3-}$...
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Q JEE MAIN 2021
The set in which compounds have different nature is :
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Q JEE MAIN 2021
Match List-I with List-II : Choose the correct answer from the options given below :
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Q JEE MAIN 2021
In the following the correct bond order sequence is:
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Q JEE MAIN 2021
The hybridisations of the atomic orbitals of nitrogen in $\mathrm{NO}_2^{-}, \mathrm{NO}_2^{+}$andN $\mathrm{NH}_4^{+}$respectively are.
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Q JEE MAIN 2021
Which one of the following species doesn't have a magnetic moment of 1.73 BM, (spin only value) ?
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Q JEE MAIN 2021
The difference between bond orders of CO and $\mathrm{NO}^{\oplus}$ is $\frac{\mathrm{x}}{2}$ where $\mathrm{x}=$ $\_\_\_\_$ . (Round off to the Nearest...
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Q JEE MAIN 2021
In gaseous triethyl amine the "–C–N–C–" bond angle is ________ degree.
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Q JEE MAIN 2021
The oxidation states of ' $\mathrm{P}^{\prime}$ in $\mathrm{H}_4 \mathrm{P}_2 \mathrm{O}_7, \mathrm{H}_4 \mathrm{P}_2 \mathrm{O}_5$ and $\mathrm{H}_4 \mathrm{P}_2 \mathrm{O}_6$, respectively, are :
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Q JEE MAIN 2019
Among the following molecules/ions, $$ \mathrm{C}_2^{2-}, \mathrm{N}_2^{2-}, \mathrm{O}_2^{2-}, \mathrm{O}_2 $$ Which one is diamagnetic and has the shortest bond length?
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Q JEE MAIN 2019
The correct statement about $\mathrm{ICl}_5$ and $\mathrm{ICl}_4^{-}$is :
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Q JEE MAIN 2021
The number of species below that have two lone pairs of electrons in their central atom is $\_\_\_\_$ (Round off...
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Q JEE-MAIN 2021
Amongst the following, the linear species is
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Q JEE MAIN 2021
The secondary valency and the number of hydrogen bonded water molecule(s) in $\mathrm{CuSO}_4 .5 \mathrm{H}_2 \mathrm{O}$, respectively, are :
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Q JEE-MAIN 2021
The set that represents the pair of neutral oxides of nitrogen is :
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Q JEE MAIN 2021
The oxidation states of nitrogen in NO, NO2, N2O and $\mathrm{NO}_3^{-}$are in the order of :
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Q JEE Main 2019
According to molecular orbital theory, which of the following is true with respect to $\mathrm{Li}_2{ }^{+}$and $\mathrm{Li}_2{ }^{-}$?
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Q JEE-Main-2021_
The correct order of conductivity of ions in water is:
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Q JEE MAIN 2021
The correct shape and I-I-I bond angles respectively in $\mathrm{I}_3^{-}$ion are :-
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Q JEE-Main-2021_
Which of the following compound CANNOT act as a Lewis base?
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Q JEE-Main-2021_
A central atom in a molecule has two lone pairs of electrons and forms three single bonds. The shape of...
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Q JEE MAIN 2021
AX is a covalent diatomic molecule where A and X are second row elements of periodic table. Based on Molecular...
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Q JEE MAIN 2021
The correct order of bond dissociation enthalpy of halogens is :
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Q JEE MAIN 2021
Which among the following species has unequal bond lengths ?
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Q JEE MAIN 2021
Which pair of oxides is acidic in nature?
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Q JEE MAIN 2021
Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R...
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Q JEE MAIN 2021
Match List-I with List-II :
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Q JEE MAIN 2022
Number of amphoteric compound among the following is __________
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Q JEE MAIN 2021
Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R....
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Q JEE MAIN 2021
Which of the following are isostructural pairs ? $\mathrm{SO}_4^{2-}$ and $\mathrm{CrO}_4^{2-}$ $\mathrm{SiCl}_4$ and $\mathrm{TiCl}_4$ $\mathrm{NH}_3$ and $\mathrm{NO}_3^{-}$ $\mathrm{BCl}_3$ and $\mathrm{BrCl}_3$
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Q JEE MAIN 2021
Among the following, the number of halide(s) which is/are inert to hydrolysis is _______.
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Q JEE MAIN 2021
According to molecular theory, the species among the following that does not exist is:
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Q JEE MAIN 2022
According to MO theory, number of species/ions from the following having identical bond order is _____:$\mathrm{CN}^{-}, \mathrm{NO}^{+}, \mathrm{O}_2, \mathrm{O}_2^{+}, \mathrm{O}_2^{2+}$
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Q JEE MAIN 2022
Amongst the following the number of oxide(s) which are paramagnetic in nature is $...
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Q JEE MAIN 2022
Consider the following sulphure based oxoacids. $$ \mathrm{H}_2 \mathrm{SO}_3, \mathrm{H}_2 \mathrm{SO}_4, \mathrm{H}_2 \mathrm{~S}_2 \mathrm{O}_8 \text { and } \mathrm{H}_2 \mathrm{~S}_2...
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Q JEE MAIN 2022
The sum of number of lone pairs of electrons present on the central atoms of $\mathrm{XeO}_3, \mathrm{XeOF}_4$ and $\mathrm{XeF}_6$ is
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Q JEE MAIN 2022
The number of interhalogens from the following having square pyramidal structure is : $$ \mathrm{ClF}_3, \mathrm{IF}_7, \mathrm{BrF}_5, \mathrm{BrF}_3, \mathrm{I}_2 \mathrm{Cl}_6,...
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Q JEE MAIN 2022
The number of paramagnetic species among the following is $\_\_\_\_$ . $\mathrm{B}_2, \mathrm{Li}_2, \mathrm{C}_2, \mathrm{C}_2^{-}, \mathrm{O}_2^{2-}, \mathrm{O}_2^{+} ;$and $\mathrm{He}_2^{+}$
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Q JEE MAIN 2022
Consider, $\mathrm{PF}_5, \mathrm{BrF}_5, \mathrm{PCl}_3, \mathrm{SF}_6,\left[\mathrm{ICl}_4\right]^{-}, \mathrm{ClF}_3$ and $\mathrm{IF}_5$. Amongst the above molecule(s)/ion(s), the number of molecule(s)/ion(s) having $\mathrm{sp}^3 \mathrm{~d}^2$ hybridisation...
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Q JEE MAIN 2022
Given below are two statements. Statement I : $\mathrm{O}_{2, a, \mathrm{Cu}^{2+}}$ and $\mathrm{Fe}^{3+}$ are weakly attracted by magnetic field and...
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Q JEE MAIN 2022
The number of molecule(s) or ion(s) from the following having non-planar structure is_______.$...
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Q JEE MAIN 2022
Match List I with List II : Choose the correct answer from the options given below
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Q JEE MAIN 2022
Arrange the following in increasing order of their covalent character. (A) $\mathrm{CaF}_2$ (B) $\mathrm{CaCl}_2$ (C) $\mathrm{CaBr}_2$ (D) $\mathrm{Cal}_2$
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Q JEE-Main 2022
Among the following species $$ \mathrm{N}_2, \mathrm{~N}_2^{+}, \mathrm{N}_2^{-}, \mathrm{N}_2^{2-}, \mathrm{O}_2, \mathrm{O}_2^{+}, \mathrm{O}_2^{-}, \mathrm{O}_2^{2-} $$ the number of species showing diamagnetism...
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Q JEE MAIN 2022
Number of lone pairs of electrons in the central atom of $\mathrm{SCl}_2, \mathrm{O}_3, \mathrm{ClF}_3$ and $\mathrm{SF}_6$, respectively, are in
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Q JEE MAIN 2022
Which of the following pair of molecules contain odd electron molecule and an expanded octet molecule?
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Q JEE MAIN 2022
Given below are two statements : One is labeled as Assertion A and the other is labeled as Reason R...
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Q JEE MAIN 2022
Match List - I with List - II. Choose the correct answer from the options given below :
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Q JEE MAIN 2022
Amongst $\mathrm{SF}_4, \mathrm{XeF}_4, \mathrm{CF}_4$ and $\mathrm{H}_2 \mathrm{O}$, the number of species with two lone pairs of electrons $\_\_\_\_$
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Q JEE MAIN 2022
Number of lone pair (s) of electrons on central atom and the shape of $\mathrm{BrF}_3$ molecule respectively, are.
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Q JEE MAIN 2022
Among the following basic oxide is :
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Q JEE MAIN 2022
Match List-I with List-II. Choose the correct answer from the options given below :
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Q JEE MAIN 2022
In the structure of $\mathrm{SF}_4$ , the lone pair of electrons on S is in.
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Q JEE-MAIN 2022
The correct order of increasing intermolecular hydrogen bond strength is
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Q JEE MAIN 2022
Identify the incorrect statement for $\mathrm{PCl}_5$ from the following.
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Q JEE MAIN 2022
Amongst $\mathrm{BeF}_2, \mathrm{BF}_3, \mathrm{H}_2 \mathrm{O}, \mathrm{NH}_3, \mathrm{CCl}_4$ and HCl , the number of molecules with non-zero net dipole moment is...
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Q JEE-Main 2022
The correct order of bond orders of $\mathrm{C}_2^{2-}, \mathrm{N}_2^{2-}$ and $\mathrm{O}_2^{2-}$ is, respeptively.
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Q JEE MAIN 2022
The hybridization of P exhibited in $\mathrm{PF}_5$ is $\mathrm{sp}^x \mathrm{~d}^y$. The value of y is __________.
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Q JEE MAIN 2022
Two elements A and B which form 0.15 moles of A2B and AB3 type compounds. If both A2B and AB3...
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Q JEE MAIN 2022
Arrange the following in the decreasing order of their covalent character : (A) LiCl (B) NaCl (C) KCl (D) CsCl...
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Q JEE MAIN 2022
Based upon VSEPR theory, match the shape (geometry) of the molecules in List-I with the molecules in List-II and select...
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Q JEE MAIN 2024
Select the compound from the following that will show intramolecular hydrogen bonding.
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Q JEE MAIN 2022
Consider the ions/molecule For increasing bond order the correct option is :
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Q JEE MAIN 2024
Which of the following is least ionic ?
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Q JEE MAIN 2022
Bonding in which of the following diatomic molecules(s) become(s) stronger, on the basis of MO Theory, by removal of an...
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Q JEE MAIN 2024
$\mathrm{A}_{(\mathrm{g})} \rightleftharpoons \mathrm{B}_{(\mathrm{g})}+\frac{\mathrm{C}}{2}(\mathrm{~g})$ The correct relationship between $K_P, \alpha$ and equilibrium pressure $P$ is
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Q JEE MAIN 2024
Given below are two statements: Statement (I): A $\pi$ bonding MO has lower electron density above and below the inter-nuclear...
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Q JEE MAIN 2024
The total number of molecules with zero dipole moment among $\mathrm{CH}_4, \mathrm{BF}_3, \mathrm{H}_2 \mathrm{O}, \mathrm{HF}, \mathrm{NH}_3, \mathrm{CO}_2$ and $\mathrm{SO}_2$ is
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Q JEE MAIN 2024
Given below are two statements: Statement-I: Since fluorine is more electronegative than nitrogen, the net dipole moment of $\mathrm{NF}_3$ is...
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Q JEE MAIN 2024
The total number of anti bonding molecular orbitals, formed from 2s and 2p atomic orbitals in a diatomic molecule is
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Q JEE MAIN 2024
The molecule/ion with square pyramidal shape is:
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Q JEE MIAN 2024
The number of non-polar molecules from the following is $\mathrm{HF}, \mathrm{H}_2 \mathrm{O}, \mathrm{SO}_2, \mathrm{H}_2, \mathrm{CO}_2, \mathrm{CH}_4, \mathrm{NH}_3, \mathrm{HCl}, \mathrm{CHCl}_3, \mathrm{BF}_3$
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Q JEE MAIN
Given below are two statements : Statement (I) : For $\mathrm{ClF}_3$, all three possible structures may be drawn as follows....
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Q JEE MAIN 223
In $\mathrm{SO}_2, \mathrm{NO}_2^{-}$and $\mathrm{N}_3^{-}$the hybridizations at the central atom are respectively:
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Q JEE MAIN 2025
Given below are two statements: Statement I : $\mathrm{H}_2 \mathrm{Se}$ is more acidic than $\mathrm{H}_2 \mathrm{Te}$ Statement II : $\mathrm{H}_2$...
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Q JEE MAIN 2023
The maximum number of lone pairs of electrons on the central atom from the following species is $\_\_\_\_$ $...
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Q JEE MAIN 2023
The number of species from the following carrying a single lone pair on central atom Xenon is ____ $...
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Q JEE MAIN 2023
Which of the following complexes will exhibit maximum attraction to an applied magnetic field?
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Q JEE MAIN 2023
Given below are two statements: Statement I: SO2 and H2¬O both possess V-shaped structure. Statement II: The bond angle of...
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Q JEE MAIN 2023
Which one of the following pairs is an example of polar molecular solids?
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Q JEE MAIN 2023
The number of molecules from the following which contain only two lone pair of electrons is $\_\_\_\_$ . $...
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Q JEE MAIN 2023
Which hydride among the following is less stable?
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Amongst the following, the number of species having the linear shape is ____. $...
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Q JEE MAIN 2023
The bond order and magnetic property of acetylide ion are same as that of
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Q JEE MAIN 2023
Total number of acidic oxides among $\mathrm{N}_2 \mathrm{O}_3, \mathrm{NO}_2, \mathrm{~N}_2 \mathrm{O}, \mathrm{Cl}_2 \mathrm{O}_7, \mathrm{SO}_2, \mathrm{CO}, \mathrm{CaO}, \mathrm{Na}_2 \mathrm{O}$ and NO...
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Q JEE MAIN 2023
Boric acid in solid, whereas $\mathrm{BF}_3$ is gas at room temperature because of
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Q JEE MAIN 2023
Bond dissociation energy of $\mathrm{E}-\mathrm{H}$ bond of the " $\mathrm{H}_2 \mathrm{E}$ " hydrides of group 16 elements (given below), follows...
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Q JEE MAIN 2023
Chlorides of which metal are soluble in organic solvents:
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Q JEE MAIN 2023
Statement 1 : Dipole moment is a vector quantity and by convention it is depicted by a small arrow with...
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Q JEE MAIN 2023
Which of the following represents the correct order of metallic character of the given elements ?
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Q JEE MAIN 2023
What is the number of unpaired electron(s) in the highest occupied molecular orbital of the following species : $...
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Q JEE MAIN 2023
The sum of lone pairs present on the central atom of the interhalogen $\mathrm{IF}_5$ and $\mathrm{IF}_7$ is ______.
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Q JEE MAIN 2023
Match List-I with List-II: [JEE (Main) 11-4-23_S1] [CB_E] Ea$...
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Q JEE MAIN 2023
Consider the following statements: (A) NF3 molecule has a trigonal planar structure. (B) Bond length of N2 is shorter than...
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Q JEE MAIN 2023
The number of bent-shaped molecule/s from the following is ______. $\mathrm{N}_3^{-}, \mathrm{NO}_2^{-}, \mathrm{I}_3^{-}, \mathrm{O}_3, \mathrm{SO}_2$
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Q JEE MAIN 2023
The number of following factors which affect the percent covalent character of the ionic bond is____
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Q JEE MAIN 2023
oxidation sate of phosphorus in hypophosphoric acid is + ________.
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Q JEE MAIN 2023
Decreasing order of the hydrogen bonding in following forms of water is correctly represented by A. Liquid water B. Ice...
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Q JEE MAIN 2023
Match List I with List IIChoose the correct answer from the options given below :
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Q JEE MAIN 2023
The number of molecules or ions from the following, which do not have odd number of electrons are ______.
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Q JEE MAIN 2023
Order of Covalent bond;
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Q JEE MAIN 2023
Resonance in carbonate ion $\left(\mathrm{CO}_3^{2-}\right)$ is Which of the following is true?
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Q JEE MAIN 2023
The correct order of basicity of oxides of vanadium is
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Q JEE MAIN 2023
The magnetic behaviour of Li2O, Na2O2 and KO2, respectively, are
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Q JEE MAIN 2023
Decreasing order of the hydrogen bonding in following forms of water is correctly represented by A. Liquid water B. Ice...
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Q JEE MAIN 2023
Order of Covalent bond;
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Q JEE MAIN 2024
The number of molecules/ion/s having trigonal bipyramidal shape is PF_5,BrF_5,PCl_5,[PtCl_4 ]^(2-),BF_3,Fe(CO)_5
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Q JEE MAIN 2024
The total number of species from the following in which one unpaired electron is present, is N_2,O_2,C_2^-,O_2^-,O_2^(2-),H_2^+,CN^-,He_2^+
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Q JEE MAIN 2024
Arrange the bonds in order of increasing ionic character in the molecules. LiF,K_2 O,N_2,SO_2 and CIF_3.
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Q JEEE MAINS 2024
Number of molecules/species from the following having one unpaired electron is $\mathrm{O}_2, \mathrm{O}_2^{-1}, \mathrm{NO}, \mathrm{CN}^{-1}, \mathrm{O}_2^{2-}$
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Q JEE MAIN 2024
In which one of the following pairs the central atoms exhibit $\mathrm{sp}^2$ hybridization?
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Q JEE MAIN 2024
In case of isoelectronic species the size of F^-,Ne and Na^+is affected by:
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Number of molecules from the following which are exceptions to octet rule is $...
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Q JEE MAIN 2024
In the lewis dot structure for NO_2^-, total number of valence electrons around nitrogen is
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Number of molecules/ions from the following in which the central atom is involved in $\mathrm{sp}^3$ hybridization is $...
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Q JEEE MAINS 2024
Which one of the following molecules has maximum dipole moment?
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Q JEE MAIN 2024
Match List I and with List II Choose the correct answer from the option below :
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Q JEE MAIN 2024
Match List I with List II : Choose the correct answer from the options given below :
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Match List I with List II : Choose the correct answer from the options given below :
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Match List I with List II : Choose the correct answer from the options given below :
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The number of species from the following in which the central atom uses sp^3 hybrid orbitals in its bonding is...
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The number of species from the following which are paramagnetic and with bond order equal to one is $...
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Q JEE MAIN 2024
The total number of molecular orbitals formed from 2s and 2p atomic orbitals of a diatomic molecule
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Q JEE MAIN 2024
Number of compounds with one lone pair of electrons on central atom amongst following is O_3,H_2 O,SF_4,ClF_3,NH_3,BrF_5,XeF_4
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Q JEE MAIN 2024
The linear combination of atomic orbitals to form molecular orbitals takes place only when the combining atomic orbitals A. have...
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Q JEE MAIN 2024
Match List-I with List-II
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Q JEE MAIN 2024
Aluminium chloride in acidified aqueous solution forms an ion having geometry
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Q JEE MAIN 2025
In 3,3-dimethylhex-1-en-4-yne, there are $\_\_\_\_$ $s p^{3}$, $\_\_\_\_$ $s p^{2}$ and $\_\_\_\_$ sp hybridised carbon atoms respectively.
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Which among the following molecules is (a) involved in $s p^{3} d$ hybridization, (b) has different bond lengths and (c)...
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Q JEE MAIN 2024
Sum of bond order of CO and $NO^+$ is
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Total number of non bonded electrons present in $\mathrm{NO}_{2}{ }^{-}$ ion based on Lewis theory is $\_\_\_\_$ .
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Q JEE MAIN 2025
Match the LIST-I with LIST-I Choose the correct answer from the options given below:
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Q JEE MAIN 2025
Given below are two statements: Statement I: Nitrogen forms oxides with +1 to +5 oxidation states due to the formation...
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Which of the following molecule(s) show/s paramagnetic behavior? A. ${{\rm{O}}_2}$ B. ${{\rm{N}}_2}$ C. ${{\rm{F}}_2}$ D. ${{\rm{S}}_2}$ E. ${\rm{C}}{{\rm{l}}_2}$ Choose the...
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Q JEE MAIN 2025
Identify the inorganic sulphides that are yellow in colour :[0pt] [JEE MAIN\_280125\_S2][Chemical bonding] [T-16][M0derate] (A) $\left(\mathrm{NH}_{4}\right)_{2} \mathrm{~S}$ (B) PbS (C)...
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Given below are two statements :[0pt] tatement (I): Experimentally determined oxygen-oxygen bond lengths in the $\mathrm{O}_{3}$ are found to be...
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Q JEE MAIN 2025
Among $S{O_2},N{F_3},N{H_3},Xe{F_2},Cl{F_3}$ and $S{F_4}$, the hybridization of the molecule with nonzero dipole moment and highest number of lone-pairs of electrons...
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Q JEE MAIN 2025
A molecule with the formula $A{X_4}Y$ has all it's elements from p-block. Element A is rarest, monoatomic, non-radioactive from its...
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Q JEE MAIN 2025
Consider ' n ' is the number of lone pair of electrons present in the equatorial position of the most...
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Q JEE MAIN 2025
The molecules having square pyramidal geometry are
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Q JEE MAIN 2025
Which of the following linear combination of atomic orbitals will lead to formation of molecular orbitals in homonuclear diatomic molecules...
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Q JEE MAIN 2025
Which of the following statement is true with respect to ${{\rm{H}}_2}{\rm{O}},{\rm{N}}{{\rm{H}}_3}$ and ${\rm{C}}{{\rm{H}}_4}$ ? A. The central atoms of all...
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Q JEE MAIN 2025
Match the LIST-I with LIST-II
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Q JEE MAIN 2025
The incorrect statement among the following is:
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Q JEE MAIN 2025
\begin{aligned} &\text { Arrange the following compounds in increasing order of their dipole moment . }\\ &\mathrm{HBr}, \mathrm{H}_2 \mathrm{~S}, \mathrm{NF}_3...
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Q JEE MAIN 2025
The number of molecules/ions that show linear geometry among the following is ${\rm{S}}{{\rm{O}}_2},{\rm{BeC}}{{\rm{l}}_2},{\rm{C}}{{\rm{O}}_2},\;{\rm{N}}_3^ - ,{\rm{N}}{{\rm{O}}_2},\;{{\rm{F}}_2}{\rm{O}},{\rm{Xe}}{{\rm{F}}_2},{\rm{NO}}_2^ + ,{\rm{I}}_3^ - ,{{\rm{O}}_3}$
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Q JEE-Advanced 2025
The correct statement(s) about intermolecular forces is(are)
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Q JEE Advanced 2025
Regarding the molecular orbital (MO) energy levels for homonuclear diatomic molecules, the INCORRECT statement(s) is(are)
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