Question
Chemistry Question on Chemical bonding and molecular structure
Which of the following molecules has trigonal planar geometry?
A
IF3
B
PCl3
C
NH3
D
BF3
Answer
BF3
Explanation
Solution
The molecule of boron trifluoride, BF3, has a trigonal planar shape.
Three bond pairs and no lone electron pairs make up the centre B atom. It goes through sp2 hybridization.
The geometry of IF3 is 'T' shaped. The geometries of PCl3 and NH3 are pyramidal.
Therefore, the correct option is (D) BF3 .