Statement-I: The electronic structure of azide ion $({N_{3}}^{-})$ is $[: \ddot{N} \leftarrow N \equiv N :]^{-}$
Statemeot-2 is not a resonating structure of azide ion, because the position of atoms cannot be changed.

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Statement-I is True, Statement-2 is True; Statement-2 is a correct explanation for Statement-I.

Statement-I is True, Statement-2 is True, Statement-2
Is NOT a correct explanation for Statement-I.

Statement-I is False, Statement-2 is True.

Statement-I is True, Statement-2 is False

answer is B.

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Detailed Solution

Fluorine's electron affinity is lower than chlorine's. This is because of the following reason: While chlorine contains seven electrons in its 3p-subshell, fluorine has seven in its 2p-subshell. Compared to 2p-subshell, 3p-subshell is comparatively larger.