Periodic table of elements

1 - Hydrogen [H]

1: Hydrogen - Hydrogenium [H]
Group: 1
Period: 1
Atomic number: 1
Atomic mass: 1.00794
Configuration: 1s1
Atomic radius: 53 pm
Covalent radius: 31 pm
Electron affinity: 72.8 eV
Ionization energy: 13.5984 eV
Electronic term: 2S1/2
Mass fraction in the earth crust: 0.0015
Mass fraction in the earth space: 0.75
Electronegativity: 2.2

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