Which one has a pyramidal structure?

The $H-N-H$ angle in ammonia is $107.6^{\circ}$ while the $H-P-H$ angle in phosphine is $93.5^{\circ}.$ Relative to phosphine,the $p$-character of the lone-pair on ammonia is expected to be

The compound that has the largest $H-M-H$ bond angle $(M = N, O, S, C)$ is :

The correct order of bond angle is:

The shape of the $BF_3$ molecule is:

What is the shape of the $SO_2$ molecule?