A metallic element exists as a cubic lattice. Each edge of the unit cell is 2.88. The density of the metal is 7.20 g cm-3. How many unit cells there will be in 100g of the metal?
Volume of unit cell = (2.88)3 = 23.9 x 10-24 cm3
Volume of 100 g of the metal = m/p
= 100 = 13.9 cm3
Number of unit cells in this volume
