A given metal crystallises out with a cubic structure having edge length of 361 pm. If there are four metal atoms in one unit cell, what is the radius of one atom?

If $$a$$ is the length of the side of a cube, the distance between the body centered atom and one corner atom in the cube will be

The number of carbon atoms per unit cell of diamond unit cell is

A metal has a fcc lattice. The edge length of the unit cell is 404 pm. The density of the metal is 2.72 g cm^$$-$$3. The molar mass of the metal is
(N_A Avogadro's constant = 6.02 $$ \times $$ 10²³ mol^$$-$$1)