(i) What is meant by the term 'coordination number' ? (ii) What is the – InterviewSolution

1.	(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 ?
Answer» Solution :(i) The co-ordination number of atoms, ions or molecules in a crystalline solid is the number of the constituent PARTICLES PRESENT in the immediate SURROUNDINGS of the PARTICLE under consideration. (ii) (a) 12 (b) 8

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