The most abundant metal in earth's crust is _____.

Options

A. Al
B. O
C. Fe
D. Si

Answer

To solve the question regarding the most abundant metal in Earth's crust, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Options**: The question provides four options:
- Option 1: Aluminum
- Option 2: Oxygen
- Option 3: Iron
- Option 4: Silicon

2. **Understand the Composition of Earth's Crust**:
- The Earth's crust is primarily composed of various elements, and we need to identify which of the options given is the most abundant metal.

3. **Review the Abundance of Each Element**:
- Oxygen: 46.1%
- Silicon: 28.2%
- Aluminum: 8.23%
- Iron: 5.63%

4. **Analyze the Data**:
- From the percentages, we can see that oxygen is the most abundant element in the Earth's crust, but it is not a metal.
- Among the metals listed, aluminum has the highest percentage (8.23%).

5. **Conclusion**:
- The question specifically asks for the most abundant metal, and based on the data, the most abundant metal in the Earth's crust is **Aluminum**.

### Final Answer:
The most abundant metal in Earth's crust is **Aluminum**.

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