Periodic table of elements

37 - Rubidium [Rb]

37: Rubidium - Rubidium [Rb]
Group: 1
Period: 5
Atomic number: 37
Atomic mass: 85.4678
Configuration: [Kr] 5s1
Atomic radius: 265 pm
Covalent radius: 220 pm
Electron affinity: 46.9 eV
Ionization energy: 4.1771 eV
Electronic term: 2S1/2
Mass fraction in the earth crust: 0.00006
Mass fraction in the earth space: 0.00000001
Electronegativity: 0.82

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