Iodine
Iodine
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Iodine ΒΆ
AtomicNumber: 53
Element: Iodine
Symbol: I
AtomicMass: 126.904
NumberofNeutrons: 74
NumberofProtons: 53
NumberofElectrons: 53
Period: 5
Group: 17.0
Phase: solid
Radioactive: nan
Natural: yes
Metal: nan
Nonmetal: yes
Metalloid: nan
Type: Halogen
AtomicRadius: 1.3
Electronegativity: 2.66
FirstIonization: 10.4513
Density: 4.93
MeltingPoint: 386.65
BoilingPoint: 457.4
NumberOfIsotopes: 24.0
Discoverer: Courtois
Year: 1811.0
SpecificHeat: 0.214
NumberofShells: 5
NumberofValence: 7.0