Atomic Number- 86
Average Atomic Mass- 222
Family- Noble Gas
Group- 18 A
Color- Colorless
Melting Point- 202 Kelvins
Boiling Point- 211.3 Kelvins
Densest Gas Known
Chemically Un- reactive
Cooled Below Freezing Point- has a yellow phosphorescence
Noble Gases
All Noble Gases are inert gases meaning that they don’t normally make chemical combinations. Sometimes compounds are made with noble gases but it isn’t easy. There don't tend to be naturally made compounds, but there are artificial ones. All of the elements in the Noble Gas group are gases at room temperature. Generally speaking all Noble gases have low boiling and melting points.
Atomic Structure
Number of Protons/ Electrons- 86 Number of Neutrons- 136
Discovery
Radon was discovered in 1900 by Friedrich Ernst Dorn. He discovered Radon while he was working with the element Radium. Radon was one of the first radioactive elements to be discovered. It was found after uranium, thorium, polonium and radium.
Facts
Radon was originally named niton, right after it had first been isolated. It was named niton from the Latin word nitens which means shining. In 1923 it was re-named as Radon, from the element Radium.
Mining
Radon is often found in spring water and hot springs. It is often found associated with uranium ores. Radon is able to enter the environment through soil, uranium and phosphate mines, and through coal combustion.
Isolation
Radon is isolated as a byproduct from liquefaction and separation of air.
