Helium
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by
jadarevans
Last updated 5 years ago
Discipline:
Science Subject:
Chemical Elements


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.
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