The GATE Grind

GATE 2017 ME (ME2) – Question 31

Engineering Materials · Crystal structure of common metals · 1 mark · Multiple choice

The crystal structure of aluminium is ______.

  1. body-centred cubic
  2. face-centred cubic
  3. close-packed hexagonal
  4. body-centred tetragonal

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Show answer and explanation

Correct answer: (B) face-centred cubic

Explanation

Aluminium has a face-centred cubic crystal structure under ordinary conditions: **B**. FCC has atoms at cube corners and face centres, giving four atoms per conventional unit cell and twelve nearest neighbours.