(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 ?

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

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 coordination NUMBER of a constituent particle (atom, ion or molecule) in a crystal is the number of constituent particles which are the immediate neighbours of that particle in the crystal LA IONIC crystals, coordination number of an ion in the crystal is the number of oppositely charged is surrounding that particular ion. (II) (a) 12 (B) 8