A complex cation is formed by Pt ( in some oxidation state ) with ligands (in proper number so that coordination number of Pt becomes six). Which of the following can be its correct IUPAC name :-

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Since the complex is a complex cation, the metal retains its original name (platinum, not platinate), and the name must end with the word "ion," ruling out options A and B. The question specifies that the coordination number of Platinum (Pt) must be 6.

In option C, diammine (2 monodentate = 2), ethylenediamine (1 bidentate = 2), and dithiocyanato-S (2 monodentate = 2) give a total coordination number of $2 + 2 + 2 = 6$ .

Option D has three ethylenediamine ligands, which results in an incorrect coordination number of 10 ( $2 + 6 + 2 = 10$ ).

Chemistry - Coordination Chemistry Question with Solution | TestHub

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