What is meant by unidentate and ambidentate ligands? Give two examples for each.

Explanation

### Step-by-Step Solution:

**Step 1: Define Unidentate Ligands**
Unidentate ligands are ligands that can form only one coordinate bond with a metal ion. This means they have only one donor atom that can donate a lone pair of electrons to the metal.

**Examples of Unidentate Ligands:**
1. **Ammonia (NH₃)**: It has one lone pair of electrons on the nitrogen atom, allowing it to form one coordinate bond with a metal ion.
2. **Chloride Ion (Cl⁻)**: It has one lone pair of electrons and can donate it to form a single coordinate bond with a metal ion.
...