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Assertion : Hydrides of N, O and F have ...

Assertion : Hydrides of `N, O` and F have lower boiling points than the hydrides of their subsequent group members.
Reason : Boiling point depends upon the molecular mass only.

A

If both (A) and (R) are correct and (R) is the correct explanation of (A).

B

If both (A) and (R) are correct, but (R) is not the correct explanation of (A).

C

If (A) is correct, but (R) is incorrect.

D

If both (A) and (R) are incorrect.

Text Solution

Verified by Experts

The correct Answer is:
D
Boiling point depends upon intermolecular forces. Due to higher electronegativity of N, O and F, the magnitude of hydrogen bonding in their hydrides will be quite high. Hence their boiling points will be higher than the hydrides of their subsequent group members.
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