Answer to Question #228658 in Other for Fletcher Madden

Question

The coordination number of the transition element in [PtClNO₂(NH₃)₄]^2- is?

Answer 1

The transition element is Pt (platinum) in this formula. The coordination number of it is defined by the number of ligands, bounded with this element. Ligands can be atoms, ions and simple molecules. There are 6 ligands bounded with Pt in this formula: Cl, NO₂ and 4 ions of NH₃. So the coordination number of Pt is 6.