The bond angle in $PH_3$ would be expected to be close to ............. $^o$.

The correct statement regarding the number of lone pairs on the central atoms of the molecules $SF_4$,$CF_4$,and $XeF_4$ is:

The number of lone pairs of electrons on the central atoms of $H_{2}O, SnCl_{2}, PCl_{3}$ and $XeF_{2}$ respectively, are

Total number of lone pair$(s)$ in the $XeO_2F_2$ molecule is:

Find out the correct order of repulsive interaction of electron pairs in the following systems.
$(I)$ Lone pair - lone pair
$(II)$ Lone pair - bond pair
$(III)$ Bond pair - bond pair

Which of the following triatomic molecules are linear? How is this determined?
$H_2O, F_2O, BeH_2, BeCl_2, H_2S, CO_2$