JEE CHEMISTRY MCQ: CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

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Analyzing +4 | -1

The electron affinity values of four successive elements of third period

A, B, C

and

D

are respectively

-135,-60,-200

and

-348 \mathrm{~kJ} \mathrm{~mol}^{-1}

. The outer electronic configuration of element

B

View answer and explanation

Correct option: B

3 s^2 3 p^3

Option B (

3s^2 3p^3

) is correct because elements with half-filled or fully-filled electronic configurations have lower electron affinity values due to their stability.

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