Question

The number of molecules having octahedral geometry.
(a) $PBr _{5}( s )$
(b) $SF _{6}$
(c) $PCl _{6}^{\Theta}$
(d) $\left[ SiF _{6}\right]^{2-}$
(e) $\left[ PCl _{4}^{+}\right]$
(f) $XeF _{6}$

Answer 1

(a) $PBr _{5}( s )$ exists as $\left[ PBr _{4}\right]^{+} Br ^{-}:$ Hybridisation of $P : s p^{3}:$
Tetrahedral
(b) $SF _{6}:$ Hybridisation of $s : s p^{3} d^{2}$

(c) $PCl _{6}^{-}:$Hybridisation of $P : s p^{3} d^{2}$

(d) $\left[ SiF _{6}\right]^{2-}:$ Hybridisation of $Si: s p^{3} d^{2}$, octahedral
(e) $PCl _{4}^{+}:$Hybridisation: $s p^{3}$

(f) $XeF _{6}:$ Hybridisation: $s p^{3} d^{3}$