`BF_(3)` is

A

Electron - deficient compound

B

Lewis acid

C

Used as rocket fuel

D

Ionic compound

Text Solution

Verified by Experts

The correct Answer is:
A, B
`underset("Ground state")(B)-2s^(2)2p^(1)`
`underset("Excited state")(B)-underset(sp^(2))(ubrace(2s^(1)2p_(x)^(1)2p_(y)^(1))) 2p_(z)^(0)`
Since the octet asround B is incomplete, it behaves as an electron - deficient compound. `BF_(3)` can accept a pair of electron from some other ion/molecule in vacant 2p orbital and thus behave as a Lewis acid.
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