Select CORRECT about the complex salt formed by the combination of Cation of tris(ethylenediamine)platinum(IV) chloride and Anion of sodium tetrachloridoplatinate(II)

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The complex salt is formed by combining the cation $[Pt (e n)_{3}]^{4 +}$ and the anion $[PtC l_{4}]^{2 -}$ . To achieve electrical neutrality, the ratio must be $1 : 2$ , resulting in the formula $[Pt (e n)_{3}] [PtC l_{4}]_{2}$ .

Option (C) is correct: The coordination number of platinum in the cation (with three bidentate $e n$ ligands) is 6, and in the anion (with four $C l^{-}$ ligands) is 4.

Option (D) is correct: The IUPAC name follows the pattern of naming the cation then the anion: tris(ethylenediamine)platinum(IV) tetrachloroplatinate(II).

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