Question

aluminium metal crystallizes in the cubic system with edge length the density of metal is

Answer 1

Given, Atomic mass of Al, m= 27   ∵Simple cubic unit cell, ∴no. of atoms per unit cell, Z=1    Edge length should be given in the question. Without it u can't calculate the density.

Put these values along with the value of edge length of unit cell in the formula:-

β=mZ/Na^3, where, β is the density of the metal, N is Avogadro's no., a is edge length of the unit cell. U will get the ans. Thank u.