Write true or false. A bidentate ligand has 3 coordination sites .

Answer

To determine whether the statement "A bidentate ligand has 3 coordination sites" is true or false, we can follow these steps:

### Step-by-Step Solution:

1. **Define Bidentate Ligand**:
A bidentate ligand is a type of ligand that can form two bonds with a central metal atom or ion in a coordination complex.

2. **Identify Coordination Sites**:
Coordination sites refer to the number of points at which a ligand can attach to the metal. Since bidentate ligands can attach at two different points, they have two coordination sites.

3. **Example of Bidentate Ligand**:
A common example of a bidentate ligand is ethylene diamine (en), which has the formula NH2-CH2-CH2-NH2. It has two nitrogen atoms that can coordinate to a metal center.

4. **Conclusion**:
Since a bidentate ligand has only two coordination sites, the statement that "A bidentate ligand has 3 coordination sites" is false.

### Final Answer:
**False**