Which Element In Period Two Has Less Mass?
Which Element In Period Two Has Less Mass? Lithium has the least mass, while Neon has the most mass. Lithium: The elements in Period 2 of the periodic table are: Lithium, Beryllium, Boron, Carbon, Nitrogen, Oxygen, Fluorine, and Neon. Lithium has a mass of about 6.941. Which element in Period 2 has less mass? Among