Which of the following is a planar molecule?

The $H-O-H$ bond angle in a water molecule is about .............. $^\circ$.

The three-dimensional structure of $CH_4$ is given below. The bonds are labelled as $W, X, Y$ and $Z$. What are the bonds lying in the plane $(A)$,projecting out of the plane away from the observer $(B)$ and projecting out of the plane towards the observer $(C)$?

Which of the following represents the correct Lewis structure for the cyanate ion $(OCN^-)$?

The molecular shapes of $SF_4$,$CF_4$,and $XeF_4$ are:

The molecular shapes of $SF_4$,$CF_4$,and $XeF_4$ are