Find the number of lone pairs on the central atom of each species…

Find the number of lone pairs on the central atom of each species. Valence electrons: iodine 7, xenon 8, sulphur 6 and chlorine 7. The species are $\text{ICl}_{4}^{-}$ (four chlorine atoms bonded) and $\text{XeOF}_{4}$ (one oxygen atom with a double bond and four fluorine atoms). The others are $\text{SF}_{4}$, $\text{I}_{3}^{-}$ and $\text{ClO}_{3}^{-}$. In $\text{I}_{3}^{-}$ the central iodine atom is bonded to two iodine atoms, each using one electron. In $\text{ClO}_{3}^{-}$ there are three oxygen atoms with double bonds and the charge is $-1$.