Practicing Success
What is the EAN of Pt in potassium hexachloroplatinate(IV)? |
46 86 36 84 |
86 |
The correct answer is option 2. 86. Let us recalculate the Effective Atomic Number (EAN) for potassium hexachloroplatinate(IV) \((K_2[PtCl_6])\): Given: Atomic number of platinum (Pt) = \(78\) Oxidation state of Pt = \(+IV\) Number of electrons gained by Pt from ligands through coordination = \(2 \times 6 = 12\) (each chloride ligand donates 2 electrons) Using the formula for EAN: \(\text{EAN} = (\text{Atomic number of Pt}) - (\text{Oxidation state of Pt}) + (\text{No. of electrons gained by the metal from ligands through coordination}) \) \(\text{EAN} = (78) - (4) + (12) = 86 \) So, the Effective Atomic Number (EAN) of Pt in potassium hexachloroplatinate(IV) is indeed \(86\). |