MHT CET202620 April 2026Morning ShiftChemistryCoordination CompoundsActual
Identify the formula of Bis(ethylenediamine)dithiocyanatoplatinum(IV)ion from following.
Options
- A[ Pt(en) ₂( NCS )]²⁺
- BPt [( en )₂( SCN )₂]⁴⁺
- C[ Pt(en) ₂( SCN )₂]²⁺
- DPt [( en )₃( SCN )₂]⁴⁺
Correct answer
C. [ Pt(en) ₂( SCN )₂]²⁺
Step-by-step solution
The central metal ion is Platinum in the +4 oxidation state, denoted as Pt ⁴⁺ . The ligands are: Bis(ethylenediamine) two ethylenediamine (en) molecules. Since 'en' is a neutral ligand, its charge contribution is 0 . dithiocyanato two thiocyanato ( SCN ⁻ ) ions. Each SCN ⁻ has a charge of -1 , so their total charge contribution is -2 . The net charge on the complex ion is calculated as: Net charge = Charge of Pt + Charge of 2( en ) + Charge of 2( SCN ⁻) Net charge = +4 + 0 + 2(-1) = +2 Writing the formula by placin