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Which of the following has the highest p...

Which of the following has the highest proton affinity ?

A

Stibin `(SbH_(3))`

B

Arsinie `(AsH_(3))`

C

Phosphie `(PH_(3))`

D

`Ammonia (NH_(3))`

Text Solution

Verified by Experts

The correct Answer is:
D
High electron density on small `N` atom repel lone pair, making it more available for protonation. From `P` to `Bi` size of atom increases and so lone pair becomes less available for protonation.
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