Question

Specify the co-ordination geometry around and hybridization of N and B-atoms in a 1 : 1 complex of BF₃ and $N{H}_3$:

• A. N : Tetrahedral, sp³; B : Tetrahedral, sp³
• B. N : Pyramidal, sp³; B : Pyramidal, sp³
• C. N : Pyramidal, sp³; B : Planar, sp³
• D. N : Pyramidal, sp³; B : Tetrahedral, sp³

Answer 1

The correct option is A

N : Tetrahedral, sp³; B : Tetrahedral, sp³

In ammonia boron trifluoride complex both boron and nitrogen are in $s{p}^3$ hybridized state, because a lone pair of electron present on nitrogen atom in ammonia molecule is accommodated into the sp³ hybrid orbital after boron involves itself in $s{p}^3$ hybridization.