In which of the following is the bond angle maximum?

The structure of $Cl_2O_7$ is:

Explain the shape of $BrF_{5}$.

The correct order of equatorial $FSF$ bond angle in the following compounds:
$(I) \ SF_4$ $(II) \ OSF_4$ $(III) \ H_2CSF_4$

The shape of $O_2F_2$ is similar to which of the following?

The pair of xenon compounds,which have the same number of lone pairs of electrons on the central atom is