Which molecule $AX_3$,$AX_4$,$AX_5$,$AX_6$ is most likely to have a trigonal bipyramidal structure if $A$ has no lone pair?

The geometrical arrangement of orbitals and shape of $I_3^-$ are respectively

What is the structure of $IF_7$?

Which one of the following sets is correct for the interhalogen compound $BrF_5$?

Given below are two statements:
Statement $I$: The number of compounds among $SO_2$, $SO_3$, $SF_4$, $SF_6$ and $H_2S$ in which sulphur does not obey the Octet rule is $3$.
Statement $II$: Among $[H_2O, ClF_3, SF_4]$, $[NH_3, BrF_5, SF_4]$, $[BrF_5, ClF_3, XeF_4]$ and $[XeF_4, ClF_3, H_2O]$, the number of sets in which all the molecules have one lone pair of electrons on the central atom is $1$.

The number of lone pairs of electrons on the central atoms of $H_{2}O, SnCl_{2}, PCl_{3}$ and $XeF_{2}$ respectively, are