Give two examples of intrinsic semiconductor?

Answer

To answer the question "Give two examples of intrinsic semiconductor," we can follow these steps:

### Step-by-Step Solution:

1. **Define Intrinsic Semiconductor**:
- An intrinsic semiconductor is a pure semiconductor material that has not been doped with any impurities. These materials have a balanced number of electrons and holes, allowing them to conduct electricity under certain conditions.

2. **Identify the Characteristics**:
- Intrinsic semiconductors typically have a valency of 4, meaning each atom has four electrons in its outer shell. This allows them to form covalent bonds with neighboring atoms.

3. **List Examples**:
- Common examples of intrinsic semiconductors include:
- **Silicon (Si)**: Silicon is widely used in electronic devices and has a crystal structure that allows for effective conduction.
- **Germanium (Ge)**: Germanium is another intrinsic semiconductor that was used in early transistors and has similar properties to silicon.

4. **Conclude the Answer**:
- Therefore, two examples of intrinsic semiconductors are Silicon (Si) and Germanium (Ge).

### Final Answer:
Two examples of intrinsic semiconductors are Silicon (Si) and Germanium (Ge).