Graphite is used as a solid lubricant. Give reasons.

Explanation

### Step-by-Step Solution:

1. **Understanding Graphite Structure**:
- Graphite consists of carbon atoms arranged in a hexagonal lattice structure. This arrangement forms layers of carbon atoms.

2. **Layer Formation**:
- Each layer in graphite is made up of interconnected carbon atoms, but the layers themselves are held together by weak van der Waals forces. This means that the layers can slide over each other easily.

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