Question

Question #0179e

Answer 1

See below

Explanation:

B has two vacant 2p orbital and both are likely same in size.In structure of BF3 we see that there are `3 sp^2`-p bond or B-F `sigma` bond formed by `3 sp^2`hybridized p orbital of Boron. Thus, boron has 6 electrons in valency shell. So it is electron deficient.