What is the molar mass of helium?

Helium has a molar mass of 4 grams per mole. It is the second element on the periodic table with an atomic number of 2. Helium has a very low density and is able to float through air because its density is far less than that of air.

Helium is a non-metal that is in its gas state at room temperature. Its boiling point is minus 268 degrees Celsius, while its melting point is minus 272 degrees Celsius. The element can be found in group number 18, and in period number 1. It was named after the Greek god of the Sun, Helios, and was first discovered in 1868.