Question

Lithium, the number-three element on the periodic table, has a mass that is twice that of hydrogen. true or false?

Answer 1

The correct answer is false. Lithium has a mass that is not twice that of hydrogen or any other element rather it is approximately half the mass of a carbon atom. Lithium has a mass of 6.941 g / mol while carbon has a mass of 12.01 g / mol