Identify the incorrect statements about group 15 elements : (A) D… - Vidyadip

MCQ

Identify the incorrect statements about group $15$ elements :
$(A)$ Dinitrogen is a diatomic gas which acts like an inert gas at room temperature.
$(B)$ The common oxidation states of these elements are $–3, +3$ and $+5.$
$(C)$ Nitrogen has unique ability to form $p \pi- p \pi$ multiple bonds.
$(D)$ The stability of $+5$ oxidation states increases down the group.
$(E)$ Nitrogen shows a maximum covalency of $6.$
Choose the correct answer from the options given below.

A
(A), (B), (D) only
B
(A), (C), (E) only
C
(B), (D), (E) only
D
(D) and (E) only

✓

Answer

$(D)$ Due to inert pair effect lower oxidation state is more stable.
$(E)$ Nitrogen belongs to $2^{nd}$ period and cannot expand its octet.

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