Question

S atom in $S{O}_3$ involves hybridisation:

• A. $s{p}^2$
• B. $p^2$
• C. $sp$
• D. $s{p}^3$

Answer 1

The correct option is A $s{p}^2$

Gaseous sulphur trioxide is a trigonal planar molecule by VSPER theory. The sulphur atom has an oxidation state of +6 and a formal charge of +2. The Lewis structure consists of an $S=O$ double bond and two $S-O$ dative bonds without utilizing d-orbitals. It shows $s{p}^2$ hybridization. It has zero dipole moment.