Question

The species, having bond angle of ${180}^o$ is:

• A. $P{H}_3$
• B. $BeC{l}_2$
• C. $H_{2}O$
• D. $S{O}_2$

Answer 1

The correct option is B $BeC{l}_2$

(a) $P{H}_3$ follows Drago's rule hence no hybridisation is there and bond angle is around ${90}^o$.
(b) In $BeC{l}_2$, hybridisation is $sp$ and hence bond angle is ${180}^o$.
(c) In $H_{2}O$ hybridisation is $s{p}^3$ and two lone pairs are present hence bond angle will be lesser than ${109.5}^o$.
(d) Hybridisation of $S{O}_2$ is $s{p}^2$ and one lone pair hence bond angle will be less than ${120}^o$.