Question

Consider the following molecule : $C{l}_2{O}_7$. Calculate value of $p\times q$, here $p$ and $q$ are total number of $d\pi -p\pi$ bond and total number of $s{p}^3$ hybridised atoms respectively in given molecule.

Answer 1

$\to$ 'd' orbital of ${}^{\prime }C{l}^{\prime }$ participates in all of these $\pi$ bonds.
$p=6$
$q=3$
Hence, $p\times q=6\times 3=18$.