Helium

A single atom of helium contains 2 protons in the nucleus and 2 electrons surrounding it.

Helium is practically invisible, has no smell,has no taste, and is non-toxic.

Helium

Helium is a noble gas; meaning it does not form compounds.It's state of matter is gas.

ATOMIC #~ 2ATOMIC MASS~4.00SYMBOL~ HEMELTING POINT~ -272.20*cBOILING POINT~ -268.93*c

Helium was dicovered by Pierre Janssen and Norman Lockyer in 1868.