Manganese
Manganese
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Manganese ΒΆ
AtomicNumber: 25
Element: Manganese
Symbol: Mn
AtomicMass: 54.938
NumberofNeutrons: 30
NumberofProtons: 25
NumberofElectrons: 25
Period: 4
Group: 7.0
Phase: solid
Radioactive: nan
Natural: yes
Metal: yes
Nonmetal: nan
Metalloid: nan
Type: Transition Metal
AtomicRadius: 1.8
Electronegativity: 1.55
FirstIonization: 7.434
Density: 7.44
MeltingPoint: 1519.15
BoilingPoint: 2334.0
NumberOfIsotopes: 11.0
Discoverer: Gahn, Scheele
Year: 1774.0
SpecificHeat: 0.479
NumberofShells: 4
NumberofValence: nan