Question

Which of the following pair of compounds will have three $s{p}^2-$hybrid orbitals?

• A. $S{O}_2,C{H}_4$
• B. $S{O}_3,C_2{H}_4$
• C. $B{F}_3,S{F}_4$
• D. $I_3{}^{-},S{F}_4$

Answer 1

Answer: (B)

$S{O}_3,C_2{H}_4$

$S{O}_2$ : trigonal planar ; three $s{p}^2$-hybrid orbitals

$C{H}_4$ : tetrahedral ; four $s{p}^3$-hybrid orbitals

$S{O}_3$ : Trigonal planar ; three $s{p}^2$-hybrid orbitals

$C_2{H}_4$ : Trigonal planar ; three $s{p}^2$-hybrid orbitals

$B{F}_3$ : Trigonal planar ; three $s{p}^2$-hybrid orbitals

$S{F}_4$ : Irregular tetrahedral ; five $s{p}^{3}d$-hybrid orbitals

$I_3^{-}$ : near five $s{p}^{3}d$-hybrid orbitals