The accompanying figure shows a unit cell for a hypothetical metal. To which crystal system does this unit cell belong? What would be this crystal structure be called? Calculate the density of the material, given that its atomic weight is 141g/mol. The accompanying figure shows a unit cell for a hypothetical metal. To which crystal system does this unit cell belong? What would be this crystal structure be called? Calculate the density of the material, given that its atomic weight is 141g/mol