Question

Which of the following statements is correct for 1 : 1 complex of (CH3)3N and BF3

1) Geometry around Nis pyramidal with sp3 hybridisation and that around B is planar with sp2 hybridisation
2) The B-F bond length in the complex is longer than that in BF3
3) The geometry around N and B both are tetrahedral with sp3 hybridisation
4) 2 and 3 both

Answer 1

Can you pls more elaborate your query

Answer 2

Correct option : 1) Geometry around N is pyramidal with sp3 hybridization and that around B is planar with sp2 hybridization

• BF3 has a trigonal planar shape with a 120° bond angle.
• All F atoms are present on corners of the equilateral triangle
• Due to back bonding in BF3, it is sp2 hybridized complex.
• (CH3)3N is a basic sp3 compound with the geometry of a pyramid.
• Covalent bonds are formed between C and N atoms
• One s and three p orbitals are involved in the hybridization of (CH3)3N