Helium (He)

Atomic number: 2 · Category: noble gas · Group 18 · Period 1 · Phase: Gas

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

Atomic mass: 4.0026022

Density: 0.1786

Melting point: 0.95 K

Boiling point: 4.222 K

Appearance: colorless gas, exhibiting a red-orange glow when placed in a high-voltage electric field

Source: Wikipedia

Block: s

CPK color:#d9ffff