Periodic table of elements

18 - Argon [Ar]

18: Argon - Argon [Ar]
Group: 18
Period: 3
Atomic number: 18
Atomic mass: 39.948
Configuration: [Ne] 3s23p6
Atomic radius: 71 pm
Covalent radius: 106 pm
Electron affinity: 0 eV
Ionization energy: 15.7596 eV
Electronic term: 1S0
Mass fraction in the earth crust: 0.0000015
Mass fraction in the earth space: 0.0002
Electronegativity: 4.3

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