Rubidium
Rubidium
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Rubidium ΒΆ
AtomicNumber: 37
Element: Rubidium
Symbol: Rb
AtomicMass: 85.468
NumberofNeutrons: 48
NumberofProtons: 37
NumberofElectrons: 37
Period: 5
Group: 1.0
Phase: solid
Radioactive: nan
Natural: yes
Metal: yes
Nonmetal: nan
Metalloid: nan
Type: Alkali Metal
AtomicRadius: 3.0
Electronegativity: 0.82
FirstIonization: 4.1771
Density: 1.53
MeltingPoint: 312.79
BoilingPoint: 961.0
NumberOfIsotopes: 20.0
Discoverer: Bunsen and Kirchoff
Year: 1861.0
SpecificHeat: 0.363
NumberofShells: 5
NumberofValence: 1.0