Identify the total number of molecules (amongst the following) which have bond angle lesser than

$\begin{array}{l}{\mathrm{CO}}_2,{\mathrm{CH}}_4,{\mathrm{CF}}_4,{\mathrm{CH}}_3-\mathrm{O}-{\mathrm{CH}}_3,{\mathrm{SOCl}}_2,{\mathrm{NH}}_3\text{, }\\ {\mathrm{SO}}_2{\mathrm{Br}}_2,{\mathrm{H}}_2\mathrm{O},{\mathrm{NO}}_2\end{array}$

${\mathrm{COBr}}_2$ has a double bond. In this molecule, Br–C–Br angle is slightly less than 120°.

Now, the molecules form the given choice which has bond angle less than 120° are,

${\mathrm{CH}}_4,{\mathrm{CF}}_4,{\mathrm{CH}}_3-\mathrm{O}-{\mathrm{CH}}_3,{\mathrm{SOCl}}_2,{\mathrm{NH}}_3,{\mathrm{SO}}_2{\mathrm{Br}}_2,{\mathrm{H}}_2\mathrm{O}$

There are total 7 such molecules.