Iodine - Element Properties and Periodic Table Information

Iodine - An element from the Periodic Table based on the IOUPAC 1985 standard

Chemical Elements

Periodic Table

Definition of the Iodine Element
A lustrous, violet-black, corrosive, poisonous halogen element having radioactive isotopes, especially I 131, used as a medical tracer and in thyroid disease diagnosis and therapy. Iodine compounds are used as germicides, antiseptics, and dyes.

Origin / Meaning of the name Iodine
The name originates from the Greek word Iodes meaning "violet".

Classification of the Iodine Element
Iodine is classified as an element in the 'Halogens' section which can be located in group 7 of the Periodic Table. The term "halogen" means "salt-former" and compounds containing halogens are called "salts". The halogens exist, at room temperature, in all three states of matter - Gases such as Fluorine & Chlorine, Solids such as Iodine and Astatine and Liquid as in Bromine.

Facts about the Discovery and History of the Iodine Element
Iodine was discovered by Charles Bernard Desormes (1777-1862) in 1811

Occurrence the Iodine Element
Obtained from sodium and potassium compounds

Associated Uses of Iodine
Germicides
Antiseptics
Dyes
Table salt
Organic chemistry
Photography
 

The Properties of the Iodine Element
Name of Element : Iodine
Symbol of Element : I
Atomic Number of Iodine : 53
Atomic Mass: 126.90447 amu
Melting Point: 113.5 °C - 386.65 °K
Boiling Point: 184.0 °C - 457.15 °K
Number of Protons/Electrons in Iodine : 53
Number of Neutrons in Iodine : 74
Crystal Structure: Orthorhombic
Density @ 293 K: 4.93 g/cm3
Color of Iodine : violet-black

Iodine and the Periodic Table
Check out Iodine on the Periodic Table which arranges each chemical element according to its atomic number, as based on the periodic law, so that chemical elements with similar properties are in the same column. Our Periodic Table is simple to use - just click on the symbol for Iodine for additional information and for an instant comparison of the Atomic Weight, Melting Point, Boiling Point and Mass - G/cc with any other element. An invaluable source of facts and information as a Chemistry reference guide.

Iodine - IUPAC and the Modern Standardised Periodic Table
The Standardised Periodic Table in use today was agreed by the International Union of Pure Applied Chemistry, IUPAC, in 1985 and now recognises more periods and elements than Dimitri  Mendeleev knew in his day but still all fitting into his concept of  the "Periodic Table" in which Iodine is just one element that can be found.
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The Element Iodine

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