Chemistry - CHEMICAL BONDING Question with Solution | TestHub

Find the number of specie which have maximum four atoms lying in the same plane. ${\mathrm{PCl}}_2{\mathrm{F}}_3,{\mathrm{AlBr}}_3,{\mathrm{ICl}}_4^{-},{\mathrm{BrF}}_3,{\mathrm{PI}}_4^{+},{\mathrm{H}}_3{\mathrm{O}}^{+},{\mathrm{NO}}_3^{-}$