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Boiling/melting points of the following ...

Boiling/melting points of the following hydrides follow in order.

A

`NH_(3) gt AsH_(3) gt PH_(3) gt SbH_(3)`

B

`SbH_(3) gt NH_(3) gt As H_(3) gt PH_(3)`

C

`SbH_(3) gt NH_(3) gt AsH_(3) gt PH_(3)`

D

`NH_(3)gtPH_(3) gt AsH_(3)gt SbH_(3)`

Text Solution

Verified by Experts

The correct Answer is:
C
Boiling points of `SbH_(3)(254K),NH_(3)(238K),AsH_(3)(211K) ` and `PH_(3) (185K)` therefore boiling points are of the order `SbH_(3) gt NH_(3) gt AsH_(3)gt PH_(3)`
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