Chemistry - CHEMICAL BONDING Question with Solution | TestHub

${\mathrm{I}}_3^{-}$is linear with central iodine atom undergoing $s{p}^{3}d$-hybridisation and three lone pairs occupying equatorial position. Thus, this structure include $d$-orbital contribution to the hybridisation scheme. The structure is,${\mathrm{PCl}}_3$ structure is $s{p}^3$-hybridised with one lone pair. ${\mathrm{NO}}_3^{-}$is $s{p}^2$-hybridised and ${\mathrm{H}}_2\mathrm{Se}$ is $s{p}^3$ - hybridised with two lone pairs of Se atom.