Ice crystallises in a hexagonal lattice having a volume of the unit cell as 132xx10^(-24) cm^3. If density of ice at the given temperature is 0.92 g cm^(-3), then number of H_2O molecules per unit cell is

Ice crystallises in a hexagonal lattice having a volume of the unit ce

1.	Ice crystallises in a hexagonal lattice having a volume of the unit cell as 132xx10^(-24) cm^3. If density of ice at the given temperature is 0.92 g cm^(-3), then number of H_2O molecules per unit cell is
Answer» 1 2 3 4 Solution :`rho=(ZxxM)/(a_3xxN_0)`. The AIM is to FIND Z. `0.92xx(Zxx18)/((132xx10^(-24))(6.02xx10^23))` `=(Zxx18)/(132xx6.02xx10^(-1))` or `Z=(0.92xx132xx6.02xx10^(-1))/18=4.06`