What is the number of atoms per unit cell for each metal? enter a number e. G. 1, 2, 3, 4, 5, 6, etc polonium (the first one - pink) manganese (the second - darker grey) silver (the last one - the lighter grey) for the next three questions enter either simple, bcc, or fcc. Bcc: body-centered cube; fcc: face-centered cube what type of cubic unit cell is polonium? what type of cubic unit cell is manganese? what type of cubic unit cell is silver?.