ligands

Question

Which of the following is a bidentate ligand?

RankGuru · Accepted Answer

**Denticity** refers to the number of donor atoms a single ligand uses to bond to a metal.
- **Monodentate**: Bonds via 1 atom ($NH_3, Cl^-$).
- **Bidentate**: Bonds via 2 atoms. **Ethylenediamine** ($NH_2-CH_2-CH_2-NH_2$, abbreviated as **en**) has two nitrogen donor atoms. Another example is Oxalate ($C_2O_4^{2-}$).
- **Hexadentate**: Bonds via 6 atoms. **EDTA⁴⁻** (Ethylenediaminetetraacetate) is the most common example.

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ligands

Select the correct option: