 |
| Name |
radon |
| Symbol |
Rn |
| Atomic Weight |
222.02 |
| Atomic Number |
86 |
| CAS ID |
10043-92-2 |
| Group Number |
18 |
| Group Name |
Noble Gas |
| Period Number |
6 |
| Origin of Name |
Named after the element radium. |
| Year Discovered |
1900 |
| Discovery Credits |
Discovered by F. E. Dorn at Halle, Germany. |
| Class |
Non-Metallic |
| Color |
Colorless |
| Standard State |
Gas at 77 F & 298 K (The
heaviest known mononuclear gas) |
| Description |
Colorless, odorless gas produced by
radioactive decay of radium. Little studied because of hazardous radiation
which destroys any compounds that are formed. Chemically should be like
xenon. Radon is present in uranium and thorium minerals as a radioactive
gas which can enter the atmosphere. |
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