How many lithium atoms would you need to have the same mass as one silicon atom?

To determine how many lithium atoms are needed to match the mass of one silicon atom, we first look at their atomic masses. Silicon has an Atomic Mass of about 28.09 u, while lithium has an atomic mass of about 6.94 u. Dividing the mass of silicon by the mass of lithium, approximately 28.09 u / 6.94 u ≈ 4.05. Therefore, you would need about 4 to 5 lithium atoms to equal the mass of one silicon atom.