# Question #0179e

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