Holmium
Holmium
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Holmium ΒΆ
AtomicNumber: 67
Element: Holmium
Symbol: Ho
AtomicMass: 164.93
NumberofNeutrons: 98
NumberofProtons: 67
NumberofElectrons: 67
Period: 6
Group: nan
Phase: solid
Radioactive: nan
Natural: yes
Metal: yes
Nonmetal: nan
Metalloid: nan
Type: Lanthanide
AtomicRadius: 2.5
Electronegativity: 1.23
FirstIonization: 6.0215
Density: 8.8
MeltingPoint: 1743.15
BoilingPoint: 2993.0
NumberOfIsotopes: 29.0
Discoverer: Delafontaine and Soret
Year: 1878.0
SpecificHeat: 0.165
NumberofShells: 6
NumberofValence: nan