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The decreasing order of the boiling poin...

The decreasing order of the boiling points of the following hydrides
(i) `NH_3` (ii) `PH_3`
(iii) `AsH_3` (iv) `SbH_3`
(v) `H_2O` is

A

VgtIVgtIgtIIIgtII

B

VgtIgtIIgtIIIgtIV

C

IgtIVgtIIIgtIIgtV

D

IVgtIIIgtIgtIIgtV

Text Solution

Verified by Experts

The correct Answer is:
A
The b.pt of `SbH_(3)` is higher than that of `NH_(3)`. The reason being that the stronger van der walls forces of attraction more than compensate the rease in b.pt of `NH_(3)` due to H-bonding (A ) is correct.
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DINESH PUBLICATION-THE NITROGEN FAMILY-Revision question
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