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Which of the following ions cannot be fo...

Which of the following ions cannot be formed by boron-

A

`BF_6^(3-)`

B

`BH_4^(-)`

C

`B(OH)_4^(-)`

D

`BO_2^(-)`

Text Solution

Verified by Experts

The correct Answer is:
C
Boron cannot expand its covalency beyond four due to unavailability of d-orbitals. Thus it cannot form `BF_6^(3-)`.
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