Chemistry - CHEMICAL BONDING Question with Solution | TestHub

${\mathrm{SO}}_3^{2-}$ has $\mathrm{p}\pi -\mathrm{d}\pi$ bonding. $\pi$ backbonding, is a concept in which electrons move from an atomic orbital on one atom to an appropriate symmetry antibonding orbital on $a\pi$-acceptor ligand.$\Rightarrow N,B$ and $C$ do not have $d$-subshell in valence shell.