Elements / 92
92U238.03
Uranium
Actinide · f-block · ring Q
Uranium is element 92, an actinide. It is one of the actinides, which the spiral keeps in line on ring Q instead of exiling them to a strip below the table.
Properties
| Density | 19.1 g/cm³9th densest of 99 | Terrain → |
|---|---|---|
| Melting point | 1,405 K · 1,132 °C | Terrain → |
| Boiling point | 4,404 K · 4,131 °C | Terrain → |
| Electronegativity | 1.38 | Terrain → |
| First ionization energy | 598 kJ/mol | Terrain → |
| Atomic weight | 238.029 u | Terrain → |
| Crustal abundance | 2.7 ppm | Terrain → |
| Discovered | 1789 | 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
- A 1.7-billion-year-old ore deposit at Oklo in Gabon hosted fifteen natural nuclear fission reactors, found in 1972.
- Named in 1789 after a planet discovered eight years earlier by William Herschel. It once colored Fiestaware yellow.
Checked against en.wikipedia.org.
Actinides
- Ac Actinium
- Th Thorium
- Pa Protactinium
- U Uranium
- Np Neptunium
- Pu Plutonium
- Am Americium
- Cm Curium
- Bk Berkelium
- Cf Californium
- Es Einsteinium
- Fm Fermium
- Md Mendelevium
- No Nobelium
Ring Q (period 7)
Play with Uranium
Watch it fly into its seat, or raise the whole spiral into a landscape and see where it peaks.