Question

Write the coordination number of each ion in the following crystals :
(i)NaCl (ii)CsCl (iii)ZnS (iv)`Na_2O`

Answer 1

(i)`Na^+`=6,`Cl^-`=6 , (ii)`Cs^+`=8, `Cl^-`=8 , (iii)`Zn^(2+)`=4 , `S^(2-)` =4 , (iv)`Ca^(2+)`=8 , `F^-` =4 , (v)`Na^+` =4 , `O^(2-)`= 8