1.

Which of the following is electron-deficient ?

Answer»

`PH_(3)`
`(CH_(3))_(2)`
`(SiH_(3))_(2)`
`(BH_(3))_(2)`

Solution :Diborane `B_(2)H_(6)` of `(BH_(3))_(2)` is electron deficient. It has two 3c-3e bonds.


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