Atom
- Name
- Helium
- IUPAC name
- Helium-4
- InChI
- InChI=1S/He/i1+0
- InChI key
- SWQJXJOGLNCZEY-IGMARMGPSA-N
- Comments
- 4He
- Symbol
- He
- Formula
- $^4He$
- Charge
- 0
- Atomic number Z
- 2
- Mass number A
- 4
- Nuclear spin I
- 0
- Molar mass
- 4.002603 $g/mol$
- State STP
- gas
- Electronegativity
- 0.0
- Isotope mixture type
- pure isotope