Chemical Bonding And Molecular Structure

Consider the following species:

\(\mathrm{BrF}_5, \mathrm{XeF}_5^{-}, \mathrm{BF}_4^{-}, \mathrm{ICl}_4^{-}, \mathrm{XeF}_4, \mathrm{SF}_4, \mathrm{NH}_4^{+}, \mathrm{ClF}_3, \mathrm{XeF}_2, \mathrm{ICl}_2^{-}\)

Number of species having $\mathrm{sp}^3 \mathrm{~d}$ hybridized central atom is $\_\_\_\_$ .