(a) What is meant by term 'coordination number' ? (b) What is the coor – InterviewSolution

1.	(a) What is meant by term 'coordination number' ? (b) What is the coordination number of atoms : (i) in a cubic close packed structure (ii) in a body centred cubic structure.
Answer» Solution :(a) Coordination number gives the number of nearest neighbours with which a given atom is in contact. In CASE of IONIC crystals, coordination number in the crystal is the number of oppositely charged IONS surrounding that ion. (B) (i) 12 (ii) 8.

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