Yttrium
Yttrium
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Yttrium ΒΆ
AtomicNumber: 39
Element: Yttrium
Symbol: Y
AtomicMass: 88.906
NumberofNeutrons: 50
NumberofProtons: 39
NumberofElectrons: 39
Period: 5
Group: 3.0
Phase: solid
Radioactive: nan
Natural: yes
Metal: yes
Nonmetal: nan
Metalloid: nan
Type: Transition Metal
AtomicRadius: 2.3
Electronegativity: 1.22
FirstIonization: 6.2173
Density: 4.47
MeltingPoint: 1799.15
BoilingPoint: 3609.0
NumberOfIsotopes: 21.0
Discoverer: Gadolin
Year: 1794.0
SpecificHeat: 0.298
NumberofShells: 5
NumberofValence: nan