Question

A molecule in which $s{p}^2$ hybrid orbitals are used by the central atom in forming covalent bond is:

• A. $H{e}_2$
• B. $S{O}_2$
• C. $PC{l}_5$
• D. $N_2$

Answer 1

Answer: (B)

$S{O}_2$

$\Rightarrow {He}_2$ is not formed as it's bond order is zero.

$\Rightarrow {SO}_2$

Total valence electrons around S atom

$=6+4=10$

$5$ electron pairs in total

$2$ electron pairs are involved in each S-O bond

$\therefore$ There is one lone pair

Steric number for $S=3$

$\Rightarrow s{p}^2$ hybridized

$\Rightarrow P{Cl}_5$

(Image)

Each nitrogen in $N_2$ molecule in sp-hybridized.