. What is meant by the term 'coordination number


(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?

Hint :   (i)   The number of neighbouring particles for a particle is its coordination number.

            (ii) chemical

 

Best Answer

(i) Coordination number : It is defined as the number of nearest neighbours of a particle in a close packed structure.
 
(ii)  (a) 12 (as each atom is attached with 12 other atoms.)
 
(b) 8 (because each atom is attached with 8 other atoms.)
 

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