Periodic Table of the Elements: Radon
Related article: Periodic Table of the Elements (table)Periodic Table of the Elements
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| Atomic Number: | 86 |
| Atomic Symbol: | Rn |
| Radonradon , gaseous radioactive chemical element; symbol Rn; at. no. 86; mass no. of most stable isotope 222; m.p. about −71°C;; b.p. −61.8°C;; density 9.73 grams per liter at STP; valence usually 0. Radon is colorless and the most dense gas known. ..... Click the link for more information. | |
| Atomic Weight: | (222) |
| Electron Configuration: | 2 · 8 · 18 32 · 18 · 8 |