Question

In which one of the following the central atom is $s{p}^3$ hybridized?

• A. $N{H}_4^{+}$
• B. $B{F}_3$
• C. $S{F}_6$
• D. $PC{l}_5$
• E. $Xe{F}_4$

Answer 1

Answer: (A)

Species having $4bp$ and $0lp$ or $3bp$ and $1lp$ or $2bp$ and $2lp$ are generally $s{p}^3$ hybridised.

$N{H}_4^{+}\Rightarrow 4bp+0lp=s{p}^3$ hybridised

$B{F}_3\Rightarrow 3bp+olp\Rightarrow s{p}^2$ hybridised

$S{F}_6\Rightarrow 6bp+01p=s{p}^2{d}^2$ hybridised

$PC{l}_5\Rightarrow 5bp+0lp=s{p}^{3}d$ hybridised

$Xe{F}_4\Rightarrow 4bp+21p=s{p}^3{d}^2$ hybridised

Thus, $N{H}_4^{+}$ is the species, central atom of which is $s{p}^3$ hybridised.