Helium is a chemical element with symbol He and atomic number 2. It is a colorless, odorless, tasteless, non-toxic, inert, monatomic gas, the first in the noble gas group in the periodic table. Its boiling point is the lowest among all the elements.

Atomic Weight:   4.002602
Density:         0.1785 g/l
Melting Point:   N/A °C
Boiling Point:   -268.93 °C