Which of the following molecules has trigonal planar geometry ?

Options

A. `IF_3`
B. `PCl_3`
C. `NH_3`
D. `BF_3`

Answer

D

Explanation

No. of `e^(-)` pair `= 3 + 1/2[3 - 3] = 0`
No. of `e^(-)` pair = 3 + 0

No. of atom bonded to the central atom
In case of 3, geometry is Trigonal planar.