Which of the following element is not found in a molecule of chlorophyll?

Options

A. Magnesium
B. Zinc
C. Carbon
D. Oxygen

Explanation

**Step-by-Step Solution:**

1. **Understand the Question**: The question asks which element is not found in a molecule of chlorophyll.

2. **Identify the Composition of Chlorophyll**: Chlorophyll is a green pigment essential for photosynthesis in plants. Its chemical formula is C55H72MgN4O5, indicating it contains:
- Carbon (C)
- Hydrogen (H)
- Magnesium (Mg)
- Nitrogen (N)
- Oxygen (O)

3. **List the Elements Present in Chlorophyll**: From the chemical formula, we can see that chlorophyll contains:
- Carbon
- Hydrogen
- Magnesium
- Nitrogen
- Oxygen

4. **Examine the Given Options**: The question typically provides multiple-choice options. In this case, we need to identify which of the options is not present in chlorophyll. The options usually include:
- Magnesium
- Zinc
- Carbon
- Oxygen

5. **Analyze Each Option**:
- **Magnesium**: Present in chlorophyll (central element).
- **Zinc**: Not present in chlorophyll.
- **Carbon**: Present in chlorophyll.
- **Oxygen**: Present in chlorophyll.

6. **Conclusion**: Since Zinc is not found in the molecule of chlorophyll, the correct answer is Zinc.

**Final Answer**: Zinc is the element that is not found in a molecule of chlorophyll.

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