Which of the following compound CANNOT act as a Lewis base ?

Options

A. `NF_(3)`
B. `PCl_(5)`
C. `SF_(4)`
D. `ClF_(3)`

Answer

B

Explanation

Lewis base : Chemical species which has capability to donate electron pair.
ln `NF_(3), SF_(4), ClF_(4)` central atom (i.e. N,S,Cl) having lone pair therefore act as Lewis base.
ln `PCl_(5)` central atom (P) does not have lone pair therefore does not act as Lewis base.