Asseration: The abnormality in `b.pt.` of `NH_(3)` in hydrides of `N-`family is due to `H-`bonding.
Reason: The boiling point of hydrides of `N-`family shows the order: `NH_(3)gtBiH_(3)gtSbH_(3)gtAsH_(3)gtPH_(3)`.

Options

A. If both asseration and reson are true and the reason is the correct explanation of the asseration.
B. If both asseration and reason are true ans the reason is the correct explanation of the asseration.
C. If asseration is true but reason is false.
D. If asseration is false but reason is true.

Answer

C

Explanation

The b.pt. order is
`{:underset(290)(BiH_(3))gtunderset(254)(SbH_(3))gtunderset(238.5)(NH_(3))gtunderset(210)(AsH_(3))gtunderset(185.5 K)(PH_(3)):}`