Rn
Radon Symbol (Rn)
Radon is element 86 of the periodic table. Copy its symbol Rn and see its atomic weight, electron configuration and physical properties.
What does Rn mean?
Rn is the chemical symbol for radon, element number 86 in the periodic table. Radon is a noble gas in group 18, period 6. It is a radioactive noble gas that can build up in basements and is a known cause of lung cancer.
Codes and properties
| Chemical symbol | Rn |
|---|---|
| Atomic number (Z) | 86 |
| Mass number (no standard atomic weight) | [222] |
| Group / period | 18 / 6 |
| Element category | noble gas |
| Electron configuration | [Xe]6s² 4f¹⁴ 5d¹⁰ 6p⁶ |
| State at 20 °C | Gas |
| Oxidation states | 0 |
| Melting point | 202 K (-71.15 °C) |
| Boiling point | 211.45 K (-61.70 °C) |
| Density | 0.00973 g/cm³ |
| Discovered | 1900 |
How to type Rn
- Plain text: type
Rn— element symbols are ordinary Latin letters, with the first letter capitalised and the second lowercase. - Subscripts in formulas: use Unicode subscript digits (₀₁₂₃₄₅₆₇₈₉) for formulas such as H₂O — copy them from the chemistry keyboard.
- LaTeX: write
\mathrm{Rn}in math mode, or use the mhchem package:\ce{Rn}. - HTML:
Rn; for subscripts use<sub>, e.g.H<sub>2</sub>O.
Frequently asked questions
What is the chemical symbol for radon?
The chemical symbol for radon is Rn.
What is the atomic number of radon?
Radon has atomic number 86, meaning each atom has 86 protons.
What is the electron configuration of radon?
The ground-state electron configuration of radon is [Xe]6s² 4f¹⁴ 5d¹⁰ 6p⁶.
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Reference: Radon on PubChem (NIH)