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Question:

A list of species having the formula XZ₄ is given below: XeF₄, SF₄, SiF₄, BF₄, BrF₄, [Cu(NH₃)₄]²⁺, [FeCl₄]²⁻, [CoCl₄]²⁻, and [PtCl₄]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:

Solution:

XeF₄ → Square planar
BrF₄ → Square planar
[Cu(NH₃)₄]²⁺ → Square planar
[PtCl₄]²⁻ → Square planar
SF₄ → See-saw
SiF₄ → Tetrahedral
BF₄ → Tetrahedral
[FeCl₄]²⁻ → Tetrahedral
[CoCl₄]²⁻ → Tetrahedral