Which one of the following molecules is planar?

Options

A. `NF_(3)`
B. `NCI_(3)`
C. `PH_(3)`
D. `BF_(3)`

Answer

D

Explanation

Molecule Hybridized state
(a) `NF_(3) H = (1)/(2) (7+1) = 4 implies N is sp^(3)` hybridized
(b) `NCI_(3) H = (1)/(2) (5+3) = 4 implies N is sp^(3)` hybridized
(c) `PH_(3) H = (1)/(2) (5+3) = 4 implies P is sp^(3)` hybridized
(d) `BF_(3) H = (1)/(2) (3+5) = 3 implies B is sp^(2)` hybridized and is planar.