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JEE CHEMISTRY MCQ: CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

1 Easy

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Analyzing +4 | -1

The second ionization energies of the

{C}, {N}, {O}

and

{F}

atoms are such that

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Correct option: D

O > F > N > C

The correct answer is D because after the first ionization, oxygen has a half-filled p orbital, making its second ionization energy higher than fluorine, while nitrogen's stability decreases after the first ionization.

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The compounds of the s-block elements, with the exception of lithium and ...

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