Elements / 86
86Rn[222]
Radon
Noble gas · p-block · ring P · spoke 18
Radon is element 86, a noble gas. It sits on ring P (period 6) on spoke 18, the noble gases. Follow that spoke toward the center and out again to find its chemical relatives.
Properties
| Density | 9.73 g/L (as a gas) | Terrain → |
|---|---|---|
| Melting point | 202 K · -71 °C | Terrain → |
| Boiling point | 212 K · -62 °C | Terrain → |
| Electronegativity | 2.20 | Terrain → |
| First ionization energy | 1,037 kJ/mol | Terrain → |
| Atomic weight | 222 u | Terrain → |
| Crustal abundance | 4.0 × 10⁻¹³ ppm | Terrain → |
| Discovered | 1899 | Terrain → |
Values from open reference data; see sources. "Terrain" opens that property as a 3D landscape across the whole spiral.
Two things you might not know
- One engineer's house held so much of it that living there was likened to smoking 135 packs of cigarettes a day.
- A dense radioactive gas that collects in basements; the second most frequent cause of lung cancer after smoking.
Checked against en.wikipedia.org.
Spoke 18: Noble gases
Ring P (period 6)
Play with Radon
Watch it fly into its seat, or raise the whole spiral into a landscape and see where it peaks.