Question

Which of the following statements are correct for the compound $B{F}_3$?

• A. It has trigonal planar geometry.
• B. The bond length between the central atom and the substituent atoms is shorter than the sum of the
  covalent radii
• C. The coordination geometry around central atom of complex compound of $B{F}_3$ and $N{H}_3$ (1 : 1) around B
  and N is same.
• D. In compound $B{F}_3$ there is $p\Pi -d\Pi$ bonding.

Answer 1

Answer: (A), (B), (C)

The correct options are
A It has trigonal planar geometry.
B The bond length between the central atom and the substituent atoms is shorter than the sum of the
covalent radii
C The coordination geometry around central atom of complex compound of $B{F}_3$ and $N{H}_3$ (1 : 1) around B

and N is same.
In $B{F}_3$ there is $p\pi -p\pi$ bonding as shown in figure. All other statements are correct.