NTA Abhyas JEE Main2020ChemistryCoordination CompoundsPractice
Which of the complexes is expected to have lowest Δ 0 value? [consider only magnitude]
Options
- ACo NH 3 6 3+
- BRh NH 3 6 3+
- CIr NH 3 6 3+
- DCoF 6 3 −
Correct answer
D. CoF 6 3 −
Step-by-step solution
The magnitude of Δ 0 varies from stronger to weaker ligand. According to spectrochemical series, F − is a weaker ligand while NH 3 is a stronger ligand. Stronger ligand gives a larger value of Δ 0 . Hence, among the given complexes CoF 6 3 − is expected to have lowest value of Δ 0 value.