MHT CET202620 April 2026Evening ShiftChemistryCoordination CompoundsActual
Which of the following coordinate complexes is heteroleptic?
Options
- APentacarbonyliron(0)
- BTriamminetrinitrocobalt(III)
- CTetraamminecopper(II) ion
- DTetracyanonickelate(II) ion
Correct answer
B. Triamminetrinitrocobalt(III)
Step-by-step solution
A homoleptic complex has only one type of ligand attached to the central metal atom or ion. A heteroleptic complex has more than one type of ligand attached to the central metal atom or ion. Pentacarbonyliron(0) is [Fe(CO)₅] , which has only CO ligands (homoleptic). Triamminetrinitrocobalt(III) is [Co(NH₃)₃(NO₂)₃] , which has two different types of ligands, NH₃ and NO₂⁻ (heteroleptic). Tetraamminecopper(II) ion is [Cu(NH₃)₄]²⁺ , which has only NH₃ ligands (homoleptic). Tetracyanonickelate(II) ion is [Ni(CN)₄]²⁻ , w