The structure of ammonia $(NH_3)$ is.......

The correct order of bond angles (smallest first) in $H_2S, NH_3, BF_3$ and $SiH_4$ is

Amongst the following,the number of species having a linear shape is $...........$
$XeF_2, I_3^{+}, C_3O_2, I_3^{-}, CO_2, SO_2, BeCl_2$ and $BCl_2^{\Theta}$

Which of the following molecules has a regular geometry as expected?

The shape of a molecule of $NH_3$,in which the central atom contains a lone pair of electrons,is

Identify a molecule having the highest number of lone pairs of electrons in the valence shell of the central atom.