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Question
Gold crystallises in a ccp lattice. How many nearest neighbours does a gold atom possess?
Options
6
8
10
12
MCQ
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Solution
12
Explanation:
Gold crystallizes in a ccp (cubic close-packed) structure, which is the same as a face-centred cubic (fcc) structure.
- In a ccp/fcc lattice, each atom is surrounded by 12 nearest neighbours.
- This is due to the high packing efficiency (74%) of the ccp structure.
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