Mathc the type of packing given in Column I with the itmes given in Column II.
Column -I
(i) square close packing in two dimensions
(ii) Hexagonal close packing in two dimensions
(iii) Hexagonal close packing in three dimensions
(iv) Cubic close packing in three dimensions
Column -II (a) Triagnular voids
(b) Pattern of spheres is reapted in every fourth layer
(c) Coordination number -4
(d) Pattern of sphere is reapeated i alternate layers.