Non - metal are bad conductors of electricity _______is an exception , as it is a good concductor of electricity .

Options

A. Graphite
B. Lead
C. Bauxite
D. Hematite

Answer

**Step-by-Step Text Solution:**

1. **Understanding Non-Metals**: Non-metals are elements that typically do not conduct electricity well. They are characterized by the absence of free electrons, which are necessary for the conduction of electricity.

2. **Identifying the Exception**: The question asks for an exception among non-metals that can conduct electricity. While most non-metals are poor conductors, one specific non-metal stands out.

3. **Introducing Graphite**: The exception is graphite, which is an allotrope of carbon. Unlike other non-metals, graphite has a unique structure that allows it to conduct electricity.

4. **Structure of Graphite**: Graphite consists of layers of carbon atoms arranged in a hexagonal lattice. Within these layers, there are free electrons that can move easily, allowing graphite to conduct electricity.

5. **Conclusion**: Therefore, the answer to the question is that "graphite" is the non-metal that is a good conductor of electricity.

**Final Answer**: Non-metals are bad conductors of electricity; **graphite** is an exception, as it is a good conductor of electricity.

---