Explain how can you determine the atomic mass of an density of the cubic crystal of an element whose edge is 'a' on and atomic mass is M.

What do you understand by atomic mass of an element?

Explain how can you determine the atomic mass of an unknown metal if you know its mass density and the dimensions of unit cell of its crystal.

Are the atomic masses of the elements their actual masses ?

How can you determine the atoic mass of an unknown metal if you know its density and the dimension of its unit cell ? Explain.

What is the relation between the atomic mass and actual mass of one atom of an element ?