JEE Main Chemistry question

Statement 1: First ionization energy for nitrogen is lower than oxygen. Statement 2: Across a period effective nuclear charge increases.

(A)Assertion is True, Reason is True; Reason is correct explanation for Assertion
(B)Assertion is True, Reason is True; Reason is not correct explanation for Assertion
(C)Assertion is True, Reason is False
(D)Assertion is False, Reason is TrueCorrect

Answer: (D)

Solution

Statement 1 is false: nitrogen's extra-stable, half-filled configuration actually gives it a higher first ionisation energy than oxygen, not a lower one. Statement 2 is true: effective nuclear

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Question ID VK-133221