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I

Iodine

#53 · Reactive Nonmetal

Mass126.9 u
Density4.93 g/cm³
Melting386.85 K
Boiling457.4 K
Electronegativity2.66
Ionization Energy1008.4 kJ/mol
Atomic Radius115.0 pm
Blockp-block
State (RT)Solid
Config[Kr] 4d10 5s2 5p5
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