Question

The molecules in which the central atom is $s{p}^3{d}^2$ hybridised is:

• A. $BeC{l}_2$
• B. $Xe{F}_6$
• C. $S{F}_6$
• D. $I_3{}^{-}$

Answer 1

The correct option is C $S{F}_6$

The hexavalency in $S{F}_6$ one electron each from $3s$ and $3p$ orbitals is promoted to 3d orbitals. These six orbitals get hybridised to form six $s{p}^3{d}^2$ hybrid orbitals. Each of these $s{p}^3{d}^2$ hybrid orbitals overlaps with $2p$ orbital of fluorine to form six $S-F$ bond.