Question

question 9 of 10
nf₃ has three f atoms bonded to a central n atom, with one lone electron pair on the n. what is the shape of this molecule?
a. tetrahedral
b. trigonal pyramidal
c. trigonal planar
d. bent

Explanation:

In $NF_3$, nitrogen has 3 bonding pairs (with F atoms) and 1 lone - pair. According to VSEPR theory, the electron - pair geometry is tetrahedral. But the molecular shape is determined by the positions of the atoms only. The lone - pair repels the bonding pairs more strongly, causing the molecule to adopt a trigonal pyramidal shape.

Answer:

B. Trigonal pyramidal