linkage isomerism

Question

Which pair represents linkage isomerism?

RankGuru · Accepted Answer

1. **Linkage Isomerism**: Occurs when an ambidentate ligand bonds to the metal center through two different possible donor atoms.
2. **Case Analysis**: The ligand $NO_2^-$ can bind through the Nitrogen atom (**Nitro**, $-NO_2$) or through an Oxygen atom (**Nitrito**, $-ONO$).
3. **Difference**: The nitro isomer is usually yellow/orange, while the nitrito isomer is typically red. They have different physical and chemical properties.
4. **Other options**: Option 2 involves different stoichiometry. Option 3 features different oxidation states.

Rank Guru

linkage isomerism

Select the correct option: