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Boron cannot from which one of the follo...

Boron cannot from which one of the following anions?

A

`BF_(6)^(3-)`

B

`BH_(4)^(-)`

C

`B(OH)_(4)^(-)`

D

`BO_(2)^(-)`

Text Solution

Verified by Experts

The correct Answer is:
A
Due to non-availability of `d`-orbitals, boron is unable to expand its octet.Therefore, the maximum covalence of boron cannot exceed `4`.
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