Ice crystallises in hexagonal lattice having volume of unit cell is `132times10^(-24)cm^(3)`.If density is 0.92g `cm^(3)`at a given temperature, then number of water molecules per unit cell is

Ice crystallises in a hexagonal lattice having volume of the unit cell as 132 xx 10^(-24) cm . If its density is 0.92 g cm^(-3) at a given temperature, then number of H_(2)O molecules per unit cell is

A metal 'M' is crystallised in F.C.C lattice. The number of unit cells in it having 2.4 xx 10^(24) atoms