Periodic Table of the Elements
Periodic Table




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name Iodine
latin Iodum
french Iode
german Iod
symbol I
proton number 53
atomic weight 126.90447
Pauling electronegativity 2.66
electronic configuration [Kr] 4d105s25p5
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melting point 386.85 K, 113.7°C, 236.66°F
boiling point 457.4 K, 184.25°C, 363.65°F
group 17
period 5
state (by 20°C) solid
oxidation states -1, +1, +3, +5, +7
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Year of discovery Discoverer
1811 Bernard Courtois

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