Question

The molecule that exhibits back bonding among the following is:

• A. $CC{l}_4$
• B. $N(Si{H}_3{)}_3$
• C. $S{O}_3$
• D. None of the above

Answer 1

The correct option is B $N(Si{H}_3{)}_3$

For back bonding, the donor atom must have a lone pair of electron and the acceptor must have a vacant d-orbital.


The lone pair on the nitrogen undergoes back bonding with the vacant d-orbital of $Si$.