Rn
INTRODUCTION
Radon is a colourless, odourless radioactive gaseous element, and the heaviest of the noble gases, because radon is produced when radium decays. For several decades radon was believed to be completely chemically inert.
Radon-222, which is the most abundant isotope of radon, is formed by the radioactive decay of radium-226. Radon-222 has a half-life of 3.8 days, decaying by the emission of alpha particles into an isotope of the element polonium.
BASIC INFORMATIONS
- Atomic Number
- 86
- Atomic Mass
- 222
- Atomic radius
- 0.0096
- Ionization energy
- 1037
- Electronic config
- 2,8,18,32,18,8
- Principal Valency
- N/A
- Density g/cm³
- 5.5
- Melting point °C
- -71.15
- Boiling point °C
- -61.85
- Type of Element
- Non metal
- Electronegativity
- Nil
- Element Category
- Noble Gas
- Appearance
- Colourless Gas
- Block
- p-block
- Period
- 6
- Group
- 18
- No of Isotopes
- 39
- Occurrence
- Free element
- Abundance in ppm
- 0.0000013
- Year of Discovery
- 1900
EXTRACTION
It is obtain by pysical separation processes
OXIDATION STATES
+6,+2,0
MAJOR SOURCE
Radioactive decay of rsdium and thorium.
EXAMPLES OF COMPOUND PRESENT
N/A
ECONOMIC IMPORTANCE
* Radon-222 is used in the treatment of malignant tumors.
* It is used for research purposes on treatment for cancerous disease.
