The spatial arrangement of the ligands attached to the central metal atom is called

Options

A. Coordination entity
B. Coordination polyhedron
C. Coordination number
D. Chelation

Answer

To answer the question, "The spatial arrangement of the ligands attached to the central metal atom is called," we will analyze the options provided in the video transcript step by step.

### Step 1: Understanding the Terms
1. **Coordination Entity**: This refers to the entire complex that includes the central metal atom and the ligands attached to it. However, it does not specifically describe the spatial arrangement of the ligands.

2. **Coordination Polyhedron**: This term specifically describes the spatial arrangement of the ligands around the central metal atom. It indicates the geometric shape formed by the ligands in three-dimensional space.

3. **Coordination Number**: This indicates the number of ligand atoms that are directly bonded to the central metal atom. While it provides information about how many ligands are present, it does not describe their spatial arrangement.

4. **Chelation**: This refers to the formation of a ring structure when a ligand binds to a metal atom through multiple bonding sites. It does not pertain to the spatial arrangement of ligands in general.

### Step 2: Identifying the Correct Answer
From the definitions provided, the term that specifically refers to the spatial arrangement of the ligands around the central metal atom is **Coordination Polyhedron**.

### Conclusion
The spatial arrangement of the ligands attached to the central metal atom is called **Coordination Polyhedron**.

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