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Periodic Table

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Q JEE MAIN 2025
Electronic configuration of four elements $\mathrm{A}, \mathrm{B}, \mathrm{C}$ and D are given below : (A) $1 s^{2} 2 s^{2} 2 p^{3}$ (B) $...
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Q JEE MAIN 2024
Given below are two statements :
Statement (I) : The 4f and 5f - series of elements are placed separately in the Periodic table to...
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Q JEE MAIN 2025
The type of oxide formed by the element among $\mathrm{Li}, \mathrm{Na}, \mathrm{Be}, \mathrm{Mg}, \mathrm{B}$ and Al that has the least atomic radius is :
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Q JEE MAIN 2025
Given below are two statements : Statement (I): According to the Law of Octaves, the elements were arranged in the increasing order of their atomic...
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Q JEE MAIN 2025
The amphoteric oxide among $\mathrm{V}_{2} \mathrm{O}_{3}, \mathrm{~V}_{2} \mathrm{O}_{4}$ and $\mathrm{V}_{2} \mathrm{O}_{5}$, upon reaction with alkali leads to formation of an oxide anion. The oxidation state...
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Q JEE MAIN 2025
Which of the following statements are correct?
A. The process of adding an electron to a neutral gaseous atom is always exothermic.
B. The process...
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Q JEE MAIN 2025
Given below are two statements : Statement (I): The first ionization energy of Pb is greater than that of Sn . Statement (II): The first...
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Q JEE MAIN 2025
The successive 5 ionisation energies of an element are $800,2427,3658,25024$ and $32824 \mathrm{~kJ} / \mathrm{mol}$, respectively. By using the above values predict the group in...
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Q JEE MAIN 2025
The property/properties that show irregularity in first four elements of group-17 is/are :
(A) Covalent radius
(B) Electron affinity
(C) Ionic radius
(D) First ionization...
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Q JEE MAIN 2025
Given below are two statements :
Statement (I) : The metallic radius of Al is less than that of Ga .
Statement (II) : The...
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