Which of the following mineral is the component of haemoglobin

Options

A. Iron
B. Fluorine
C. Zinc
D. Sodiurm

Answer

### Step-by-Step Solution:

1. **Understanding Hemoglobin**:
- Hemoglobin is a protein found in red blood cells (RBCs) that is responsible for transporting oxygen from the lungs to the rest of the body.

2. **Identifying Components of Hemoglobin**:
- Hemoglobin consists of four subunits, each containing a heme group. The heme group is crucial for binding oxygen.

3. **Role of Iron in Hemoglobin**:
- The heme group contains iron (Fe) in its ferrous (Fe²⁺) state. This iron is essential for the reversible binding of oxygen molecules. Each hemoglobin molecule can bind up to four oxygen molecules due to the four heme groups.

4. **Other Minerals and Their Functions**:
- The question provides options that include minerals like fluorine, zinc, and sodium.
- Fluorine is primarily associated with dental health and is found in teeth and bones.
- Zinc is important for various bodily functions, including muscle and bone health.
- Sodium plays a critical role in nerve conduction and fluid balance in the body.

5. **Conclusion**:
- Among the minerals listed, iron is the only one that is a component of hemoglobin. Therefore, the correct answer is **iron**.

### Final Answer:
The mineral that is a component of hemoglobin is **iron**.

---