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InterviewSolution
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The co-ordination number of a metal crystallizing in hexagonal close packed (hcp) structure is- (a) 12 (b) 8 (c) 4 (d) 6 |
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Answer» Correct Answer is: (a) 12 In a unit cell, an atom's coordination number is the number of atoms it is touching. The hexagonal closest packed (hcp) has a coordination number of 12 and contains 6 atoms per unit cell. The face-centred cubic (fcc) has a coordination number of 12 and contains 4 atoms per unit cell. |
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