Question

Explain why aluminium, though an electropositive metal, finds extensive use as a structural material.

Answer 1

1. Aluminium is lightweight due to its low density, making it ideal for structural use.
2. It has good thermal and electrical conductivity, beneficial in many applications.
3. Aluminium is highly resistant to corrosion because of a protective oxide layer.
4. It forms strong, light alloys used extensively in automobile and aircraft industries.
5. Its toughness and ability to be polished add to structural versatility.

These properties make aluminium extensively used as a structural material despite being electropositive.