| Formula / Notation | Rn |
|---|---|
| CAS Number | 10043-92-2 |
| Molecular Weight | 222.0 |
| Melting Point | -71.0 |
| Boiling Point | -61.8 |
| Density | 0.00973 |
| Solubility | 9.59 mg/L at 0 C |
| Appearance | Colourless, odourless radioactive noble gas |
| Also Known As | Rn, radon gas |
| Category | Elements |
What is Radon?
Radon is a colourless, odourless, radioactive noble gas, atomic number 86. The heaviest noble gas. Produced by radioactive decay of radium. Second leading cause of lung cancer (after smoking) due to inhalation of radon decay products. Accumulates in buildings from ground.
Formula & Notation
IUPAC Name: Radon
Other Names / Synonyms: Rn, radon gas
Properties & Characteristics
Physical Data
| Property | Value |
|---|---|
| Melting Point | -71.0 |
| Boiling Point | -61.8 |
| Density | 0.00973 |
| Molecular Weight | 222.0 |
| Solubility | 9.59 mg/L at 0 C |
| Appearance | Colourless, odourless radioactive noble gas |
Uses & Applications
Safety Information
Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.
Key Facts
Frequently Asked Questions
Radon is a colourless, odourless, radioactive noble gas, atomic number 86. The heaviest noble gas. Produced by radioactive decay of radium. Second leading cause of lung cancer (after smoking) due to inhalation of radon decay products. Accumulates in buildings from ground.
Radiation hazard assessment - no beneficial industrial uses. Radon mapping and geological surveys. Historical: radon spas (used medicinally - now considered hazardous). Research into noble gas chemistry.
Radioactive - second leading cause of lung cancer in many countries (after smoking). Rn-222 and decay products (Po-218, Pb-214, Bi-214, Po-214) alpha/beta/gamma emitters deposited in lungs. WHO guideline: 100 Bq/m3 indoor. Basement radon mitigation required in high-radon areas.
The formula or notation for Radon is: Rn