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 $\mathrm{p} \pi-\mathrm{p} \pi$ 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
  • $(D)$ and $(E)$ only

Answer

Correct option: D.
$(D)$ and $(E)$ only
d
$(D)$ Due to inert pair effect lower oxidation state is more stable.

$(E)$ Nitrogen belongs to $2^{\text {nd }}$ period and cannot expand its octet.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free