Information valid for I-127 unless otherwise noted
Iodine
Basic Information
Symbol: I
Atomic Number: 53
Mass: 126.904
Melting Point: 113.5
Boiling Point: 184
Number of Protons/Electrons: 53
Number of Neutrons: 74
Classification: Halogen
Crystal Structure: Orthorhombic
Density: 4.93
Color: blackish
Atomic Structure
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
Facts
Date of Discovery: 1804
Discoverer: Bernard Courtois
Name Origin: From the Greek word iôdes (violet)
Uses: required in humans
Obtained From: sodium and potassium compounds
Related Links
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![[ATOM]](atom.gif)
![[Bohr Model of Iodine]](b0053.gif)
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