The correct relationship for the bond angle of water and dimethyl ether $\left({\mathrm{CH}}_3-\underset{..}{\overset{..}{\mathrm{O}}}-{\mathrm{CH}}_3\right)$ is: 

Which among the following species has a triangular planar shape?

The shape of $\mathrm{Xe}{{\mathrm{F}}_3}^{+}$ is:

The correct order of the increasing bond angles in the following triatomic species is :  

The molecule having the smallest bond angle is-

Match the compounds of Xe in column I with the molecular structure in column II.