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Which of the following is electron defic...

Which of the following is electron deficient ?

A

`(CH_(3))_(2)`

B

`(SiH_(3))_(2)`

C

`(BH_(3))_(2)`

D

`PH_(3)`

Text Solution

Verified by Experts

The correct Answer is:
C
`CH_(3) – CH_(3), SiH_(3) – SiH_(3) and PH_(3)` contain eight electron in valence shell. In `B_(2)H_(6)` molecule sufficient electron are not available for bonding and it contain tricentric bond. So `B_(2)H_(6)` molecule is electron deficient.
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