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Periodic Table

Get chapter-wise JEE Main & Advanced questions with solutions

Q JEE MAIN 2021
Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) : Metallic...
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Q JEE MAIN 2021
Which one of the following lanthanides exhibits +2 oxidation state with diamagnetic nature ?
$($ Given Z for $\mathrm{Nd}=60, \mathrm{Yb}=70, \mathrm{La}=57, \mathrm{Ce}=58)$
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Q JEE MAIN 2021
Number of electrons present in 4 f orbital of $\mathrm{Ho}^{3+}$ ion is $\_\_\_\_$ (Given Atomic No. of $\mathrm{Ho}=67$ )
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Q JEE MAIN 2021
The spin only magnetic moments (in BM ) for free $\mathrm{Ti}^{3+}, \mathrm{V}^{2+}$ and $\mathrm{Sc}^{3+}$ ions respectively are
(At.No. Sc : 21, Ti : 22,...
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Q JEE MAIN 2021
The ionic radii of $\mathrm{F}^{-}$and $\mathrm{O}^{2-}$ respectively are $1.33 \AA$ and $1.4 \AA$, while the covalent radius of N is $0.74 \AA$. The correct statement...
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Q _JEE MAIN_2021
The CORRECT order of first ionisation enthalpy is :
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Q JEE MAIN 2021
The correct order of following 3d metal oxides, according to their oxidation numbers is :
(a) $\mathrm{CrO}_3$ (b) $\mathrm{Fe}_2 \mathrm{O}_3$ (c) $\mathrm{MnO}_2$ (d) $...
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Q JEE MAIN 2021
Which one of the following statements for D.I. Mendeleeff, is incorrect?
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Q JEE MAIN 2021
The ionic radii of $\mathrm{K}^{+}, \mathrm{Na}^{+}, \mathrm{Al}^{3+}$ and $\mathrm{Mg2}^{+}$are in the order :
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Q JEE MAIN 2021
Outermost electronic configuration of a group 13 element, E , is $4 \mathrm{~s}^2, 4 \mathrm{p}^1$. The electronic configuration of an element of p-block period-five placed...
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