A list of species having the formula $$XZ_4$$ is given below.
$$XeF_4 , SF_4 , SiF_4 , BF_4^- , BrF_4^- , [Cu(NH_3)_4]^{2+}, [FeCl_4]^{2-}, [CoCl_4]^{2-}$$ and $$[PtCl_4]^{2-}$$.
Defining shape on the basis of the location of X and Z atoms, the total number of species having a square planar shape is