Materials such as coal and pencil lead do not show malleability property. Explain, why?

Explanation

### Step-by-Step Solution:

1. **Understanding Malleability**:
- Malleability is the property of a material that allows it to be deformed under compressive stress, which means it can be hammered or rolled into thin sheets without breaking.

2. **Identifying the Materials**:
- The materials in question are coal and pencil lead. Coal is primarily made of carbon and is classified as a non-metal, while pencil lead (graphite) is also a form of carbon.

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