Question

The hybridisation of boron and oxygen atoms in boric acid are respectively.

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

Answer 1

Answer: (B)

${sp}^2$ and ${sp}^3$

Solution:- (B) $s{p}^2$ and $s{p}^3$

In boric acid $\left(H_{3}B{O}_3\right)$, boron has $3$ bond pairs of electrons while oxygen has $2$ lone pairs and $2$ bond pairs of electrons in boric acid. Thus, hybridization of boron is $s{p}^2$ and that of oxygen is $s{p}^3$.