How many of the following underlined element are sp³ hybridized.

${\left[\mathrm{Cu}{\left({\mathrm{NH}}_3\right)}_4\right]}^{+2},{\mathrm{PCl}}_3,{\mathrm{BCl}}_3,{\left[\mathrm{Pt}(\mathrm{en}{)}_2\right]}^{+2},\left[\mathrm{Ni}(\mathrm{CO}{)}_4\right],\underset{\_}{\mathrm{C}}{\mathrm{S}}_2,$

${\mathrm{SO}}_2^{2-},\mathrm{S}\underline{\mathrm{n}}{\mathrm{Cl}}_2\underline{,\mathrm{S}}{\mathrm{nCl}}_4, \underline{\mathrm{Hg}}{\mathrm{Cl}}_2,{\mathrm{ClO}}_4^{-},{\underline{\mathrm{C}}}_2{\mathrm{H}}_4, \underline{\mathrm{C}}{\mathrm{H}}_3^{+},\underline{\mathrm{C}}{\mathrm{H}}_3^{-}$

$\underline{\mathrm{N}}{\mathrm{H}}_4^{+},\underline{\mathrm{C}}l{\mathrm{F}}_3,\underline{\mathrm{N}}{\mathrm{O}}_3^{-},\underline{\mathrm{C}}{\mathrm{lO}}_3^{-}, \underline{\mathrm{P}}{\mathrm{H}}_3, {\left[\mathrm{Ni}{\left(\mathrm{CN}\right)}_4\right]}^{2-}, {\mathrm{PCl}}_5$

$\underline{\mathrm{C}}{\mathrm{H}}_2\mathrm{O}, \underline{\mathrm{S}}{\mathrm{F}}_6, {\mathrm{Cl}}_2\mathrm{CO},\underline{ {\mathrm{I}}_3^{-}}, \mathrm{H}\underline{{ }_2\mathrm{S},}$