Standard - 12: Chemistry Mirror - "Kumar" (13 General Chat Chat Lounge 27) Degenerative Loose Packing (hcp) and cubic coordinates integrated (ccp) or pane-focused cubes (ICC).

Packing refers to the arrangement of constituent units in such a way that the forces of attraction among the constituent particles is maximum and the constituents occupy the maximum available space. In two dimension there are square close packing and hexagonal close packing, cubic close packing and body-centred cubic packing i) hcp: AB AB AB AB .... arrangement Coordination no. = 12 , % occupied space = 74% ii) ccp: ABC ABC ....... arrangement Coordination no. = 12, % occupied space = 74% iii) bec: 68% space is occupied. Coordination no= 8 17. The empty space left in hcp in three dimensions is

Packing refers to the arrangement of constituent units in such a way that the forces of attraction among the constituent particles is maximum and the constituents occupy the maximum available space. In two dimension there are square close packing and hexagonal close packing, cubic close packing and body-centred cubic packing i) hcp: AB AB AB AB .... arrangement Coordination no. = 12 , % occupied space = 74% ii) ccp: ABC ABC ....... arrangement Coordination no. = 12, % occupied space = 74% iii) bec: 68% space is occupied. Coordination no= 8 17. The pattern of successive layers of cop arrange-ment can be designated as