1.28 (i) What is meant by the term 'coordination number'? (ii) What is the coordination number of atoms: (a) in a cubic close-packed structure? (b) in a body-centred cubic structure?
1.28 (i) What is meant by the term 'coordination number'? (ii) What is the coordination number of atoms: (a) in a cubic close-packed structure? (b) in a body-centred cubic structure?
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1 Answer
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1.28 Coordination number is the number of the nearest neighbors with which a given atom is in contact. In an
ionic crystal, the coordination number of an ion refers to the number of oppositely charged ions that
surround that ion.
The coordination number of atoms in a
(a) Cubic close-packed structure is 12.
(b) Body-centred cubic structure is 8
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