Question

Assertion (A): $N{H}_3$ is liquid while the other hydrides of V-A group elements are gases at room temp.
Reason(R): $N{H}_3$ possess inter-molecular H -bonds in liquid state

• A. Both (A) and (R) are true and (R) is the correct explanation of (A)
• B. Both (A) and (R) are true and (R) is not the correct explanation of (A)
• C. (A) is true and (R) is false
• D. (A) is false but (R) is true

Answer 1

The correct option is A Both (A) and (R) are true and (R) is the correct explanation of (A)

Assertion is true as ammonia is a liquid at room temperature. This is because of inter-molecular hydrogen bonding in ammonia which is absent in other hydrides of V-A group.

Reason is true because ammonia has inter-molecular hydrogen bonding.

and reason is the correct explanation of the assertion.

Hence, answer is A