radon

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 * || Ralph Bowen
 * || Ralph Bowen

Name : Radon Symbol: RN Atomic Number: 86 Atomic Weight: 222 Melting Point: 202 K (-71°C or -96°F) Boiling Point: 211.45 K (-61.7°C or -79.1°F) Density: 0.00973 grams per cubic centimeter Phase at Room Temperature: Gas Element Classification: Non-metal Period Number: 6 Protons:86 Neutrons:136

-Radon can be release alpha particles into vulnerable tissues that hurts the lungs, which can cause lung cancer.

-Radon concentrates in the air and is great over rocks that are rich of isotopes in the 238u decay.

-Radon forms chemical compounds, because of the short life of 222RN they are made in visible amounts.

History :

Radon was discovered by Friedrich Ernst Dorn. Dorn was a German chemist in 1900 he studied the radon decay chain during his time. It was first named Niton from the Latin word for shining, nitens, radon has been known as radon since 1923. Now radon is still held through the decay of radium.

Isotopes:

There are twenty isotopes known in Radon. From radium, it has a half-life of 3.823 days and is an alpha emitter; Radon-220. It is estimated that every square mile of soil to a depth of 6 inches has about 1 g of radium, which releases radon in tiny amounts into the atmosphere. Radon is found in some spring waters, Hot Springs, Arkansas.

Properties:

One part of radon is present 1 x 1021 part of air. regular temperatures radon is a colorless gas; when cooled below the freezing point, radon has a great phosphorescence which becomes yellow when the temperature is low and orange-red at the temperature of liquid air. Fluorine reacts to radon forming a fluoride.

Uses:

Radon is used by therapeutic use by a few hospitals by pumping it from a radium source and sealing it in minute tubes, called seeds or needles, for use to a patient. This practice has been stopped by because hospitals can get the seeds directly from suppliers, who make up the seeds with the wanted activity for the day of use. ||