Why germainum is preferred to silicon for making seimiconductor devices

Explanation

### Step-by-Step Solution

1. **Understanding Semiconductor Materials**:
- Semiconductors are materials that have electrical conductivity between that of conductors and insulators. They are essential for making electronic devices.

2. **Band Gap Energy**:
- The band gap is the energy difference between the valence band (where electrons are normally present) and the conduction band (where electrons can move freely). This energy is crucial for determining how easily electrons can be excited to conduct electricity.

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