What is the co-ordination of a particles in (a) hcp (b) ccp ( c) bcc arrangement? Give examples for these arrangements.

Explanation

In both hcp and ccp arrangement of co-ordination is 12.
In bcc arrangement number is 8.
Example:
(a) hcp arrangement - Mg, Zn.
(b) Cu, Ag.
( c) bcc arrangement - CsCl.