Atomic Number 2

Atomic Number 2 is belong to element of Helium.

Chemical symbol for Helium is He. Number of protons in Helium is 2. Atomic weight of Helium is 4.002602 u or g/mol.

2He

Atomic Number 2 Element Properties

Atomic Number (Z)2
Atomic SymbolHe
Element NameHelium
Group18
Period1
Atomic Weight4.002602 u
Density0.0001785 g/cm3
Melting Point (K)
Boiling Point (K)4.22 K

List all properties of Helium


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