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Iodine at Chemical Elements.com
Basic Information | Atomic Structure | Isotopes | Related Links | Citing This Page


Basic Information


Name: Iodine
Symbol: I
Atomic Number: 53
Atomic Mass: 126.90447 amu
Melting Point: 113.5 °C (386.65 K, 236.3 °F)
Boiling Point: 184.0 °C (457.15 K, 363.2 °F)
Number of Protons/Electrons: 53
Number of Neutrons: 74
Classification: Halogen
Crystal Structure: Orthorhombic
Density @ 293 K: 4.93 g/cm3
Color: blackish


Atomic Structure

[Bohr Model of Iodine]  
Number of Energy Levels: 5

    First Energy Level: 2
    Second Energy Level: 8
    Third Energy Level: 18
    Fourth Energy Level: 18
    Fifth Energy Level: 7

Isotopes

Isotope Half Life
I-1223.6 minutes
I-12313.2 hours
I-1244.2 days
I-12560.1 days
I-12613.0 days
I-127Stable
I-12825.0 minutes
I-1291.57E7 years
I-13012.4 hours
I-1318.0 days
I-1322.3 hours
I-13320.8 hours
I-13452.6 minutes
I-1356.6 hours
I-1361.4 minutes

Facts


Date of Discovery: 1811
Discoverer: Bernard Courtois
Name Origin: From the Greek word i˘des (violet)
Uses: required in humans
Obtained From: sodium and potassium compounds

Related Links

I currently do not know of any links for Iodine. If you do, please let me know

MLA Format for Citing This Page


Bentor, Yinon. Chemical Element.com - Iodine. <http://www.chemicalelements.com/elements/i.html>.

For more information about citing online sources, please visit the MLA's Website.

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