Consider the following species: BrF_5, XeF_5^-, BF_4^-, ICl_4^-, XeF_4, SF_4, NH_4^+, ClF_3, XeF_2, ICl_2^- Number of species having sp^3 d…

Consider the following species: $\displaystyle \mathrm{BrF}_5, \mathrm{XeF}_5{ }^{-}, \mathrm{BF}_4{ }^{-}, \mathrm{ICl}_4{ }^{-}, \mathrm{XeF}_4, \mathrm{SF}_4, \mathrm{NH}_4{ }^{+}, \mathrm{ClF}_3, \mathrm{XeF}_2, \mathrm{ICl}_2{ }^{-}$ Number of species having $\displaystyle \mathrm{sp}^3 \mathrm{~d}$ hybridized central atom is $\displaystyle \_\_\_\_$.