JEE Main · 2024 · 01 Feb 2024 · Shift 1 · Chemical Bonding and Molecular Structure

Determining shapes by VSEPR/hybridisation: PF${}_5$ (sp${}^3$d, trigonal bipyramidal), PCl${}_5$ (sp${}^3$d, trigonal bipyramidal), Fe(CO)${}_5$ (sp${}^3$d, trigonal bipyramidal); BrF${}_5$ (sp${}^3$d${}^2$ with one lone pair, square pyramidal); $[{\text{PtCl}}_4{]}^{2-}$ (dsp${}^2$, square planar); BF${}_3$ (sp${}^2$, trigonal planar).
Trigonal bipyramidal species: PF${}_5$, PCl${}_5$, Fe(CO)${}_5$ — a total of 3.