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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