Atomic Number 2 - Helium

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HOME > Protocols > Reference Material > Periodic Table > Helium

Helium

Atomic Number: 2

Name: Helium

Atomic symbol: He

Atomic Weight: 4.00260

Electron configuration: 1s²

Ionization energies: 2372 kJ/mol, 5250 kJ/mol

Melting Point: -272.2^oC

Boiling Point: -268.934^oC

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Next: Atomic Number 3 - Lithium

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