Radon


 * Elemant Name:** Radon


 * Element Symbol:** Rn


 * Atmomic Mass:** 222[[image:Radon_Haley.png width="216" height="288" align="right"]]


 * Atomic Number:** 86


 * Prtons:** 86


 * Eletrons:** 86


 * Doscorvery:** Radon was discovered by Friedrich Ernst Dorn, a German chemist, in 1900 while studying radium's decay chain


 * State of Matter:** Gas


 * Melting Point:** -71°C


 * Boiling Point:** -61°C


 * Charaticists:** It is a colorles gas. radon is a colorless, odorless, radioactive gas.

Interesting facts: It is a colorles gas. radon is a colorless, odorless, radioactive gas. It costs $4 million.
 * Use of Element:** It is sometimes used in cancer treatment.

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