Question

The number of P-O bonds and lone pairs present in $P_4{O}_6$ molecule is/are:
[If ans is 11 and 22, represent as 1122]

Answer 1

Phosphorus trioxide molecule $\left(P_4{O}_6\right)$ contains 12 P-O bonds because each $P$ is attached to 3 Oxygen atoms, therefore $4\times 3=12$
Each P atom has one lone pair and each O atom has 2 lone pairs, so total $1\times 4+2\times 6=16$.
Hence, the answer is 1216.