The Element Radon

What is Radon? Element Properties & Periodic Table Info

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Atomic Number Element Symbol What is the element Radon?

What is Radon as on the Periodic Table? Definition of the Radon Element
A colorless, radioactive, inert gaseous element formed by the radioactive decay of radium.  It is the most dense gas known. At temperature below it's freezing point is has a brilliant yellow phosphorescence. It is used as a radiation source in radiotherapy and to produce neutrons for research. The Atomic Number of this element is 86 and the Element Symbol is Rn.

What is Radon? Origin / Meaning of the name Radon
The name originates from the Latin word 'nitens' meaning shining.

 

What is Radon? Periodic Table Group and Classification of the Radon Element
Elements can be classified based on their physical states (States of Matter) e.g. gas, solid or liquid. This element is a gas. Radon is classified as an element in the 'Noble Gases' section which can be located in group 18 of the Periodic Table. The term 'Noble gas' derives from the Old High German word Edelgas from 'edili' meaning "noble". The name 'noble gases' is an allusion to the old, similarly termed 'Noble Metals'. The Noble Metals included  Gold, Silver and Platinum which were so called due to their long association with the aristocracy.

Facts about the Discovery and History of the Radon Element
Radon was discovered by Friedrich Ernst Dorn in 1900. William Ramsay and Robert Whytlaw-Gray isolated it and gave it the name 'Niton' in 1910.  It has been called Radon since 1923.

Sir William Ramsay (1852 - 1916)
Sir William Ramsay discovered the noble gases and received the Nobel Prize in Chemistry in 1904 "in recognition of his services in the discovery of the inert gaseous elements in air". These elements included
Argon, Krypton, neon and Xenon. Ramsay also isolated Helium which had been observed in the spectrum of the sun but had not been found on earth. In 1910 Ramsay also made and characterized radon.

Sir William Ramsay (1852 - 1916)

What is Radon? Occurrence of the Radon Element
One molecule of radon in 1 x 1021 molecules of air
Found in some spring waters and hot springs
Obtained from decay of radium

Abundances of the element in different environments
% in Universe N/A
% in Sun N/A
% in Meteorites N/A
% in Earth's Crust N/A
% in Oceans 610-20%
% in Humans N/A

Associated Uses of Radon
Treatment of cancer - radiotherapy
Produce neutrons for research

Rn

The Properties of the Radon Element
Symbol of Element : Rn
Atomic Number: 86 
Atomic Mass: (222.0) amu
Melting Point: -71.0 C - 202.15 K
Boiling Point:  -61.8 C - 211.35 K
Number of Protons/Electrons: 86
Number of Neutrons: 136
Crystal Structure: Cubic
Density @ 293 K: 9.73 g/cm3
Color : colorless

What is Radon? The Properties of the Radon Element
Name of Element : Radon
Symbol of Element : Rn
Atomic Number of Radon : 86 
Atomic Mass: (222.0) amu
Melting Point: -71.0 C - 202.15 K
Boiling Point:  -61.8 C - 211.35 K
Number of Protons/Electrons in Radon : 86
Number of Neutrons in Radon : 136
Crystal Structure: Cubic
Density @ 293 K: 9.73 g/cm3
Color of Radon : colorless

Radon as on the Periodic Table
Check out Radon 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 Radon as on the Periodic Table 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.

Other elements classified as Noble Gases
The other elements contained in this classification are as follows:

  • Helium
  • Neon
  • Argon
  • Krypton
  • Xenon

What is Radon - 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 in his day but still all fitting into his concept of  the "Periodic Table" in which Radon is just one element that can be found.

Learn about what is Radon with these fast facts...
These articles contain facts and information relating to Radon and each of the other elements including the Periodic Symbol,  group, classification, properties and atomic number which is often referred to as the Periodic Table Number. Test your knowledge of chemistry and the Periodic Table by completing the Element Symbols and Atomic Numbers on our Blank Periodic Table. Chemistry students will also find a helpful section on Chemical Formulas.

What is the Element Radon

The Elements are the building blocks of Modern Science & Chemistry


 

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