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Periodic Table

Get chapter-wise JEE Main & Advanced questions with solutions

Q JEE-MAIN 2020
The five successive ionization enthalpies of an element are 800, 2427, 3658, 25024 and 32824 kJ mol–1. The number of valence electrons in the element...
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Q JEE MAIN 2020
The increasing order of the atomic radii of the following elements is
(a) C (b) O (c) F
(d) CI (e) Br
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Q JEE MAIN 2020
The electron gain enthalpy (in kJ/mol) of fluorine, chlorine, bromine and iodine, respectively, are :
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Q JEE MAIN 2020
Oxidation number of potassium in $\mathrm{K}_2 \mathrm{O}, \mathrm{K}_2 \mathrm{O}_2$ and $\mathrm{KO}_2$, respectively, is
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Q JEE MAIN 2021
The number of 4f electrons in the ground state electronic configuration of Gd2+ is ________.
[Atomic number of Gd = 64]
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Q JEE MAIN 2020
The atomic radius of Ag is closest to
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Q JEE MAIN 2021
The correct order of ionic radii for the ions, $\mathrm{P}^{3-}, \mathrm{S}^{2-}, \mathrm{Ca}^{2+}, \mathrm{K}^{+}, \mathrm{Cl}^{-}$is
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Q JEE-MAIN 2021
Chalcogen group elements are :
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Q JEE MAIN 2021
Identify the element for which electronic configuration in +3 oxidation state is $[\mathrm{Ar}] 3 \mathrm{~d}^5$ :
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Q JEE MAIN 2021
Identify the element for which electronic configuration in +3 oxidation state is $[\mathrm{Ar}] 3 \mathrm{~d}^5:$
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