Elements / 97
97Bk[247]
Berkelium
Actinide · f-block · ring Q
Berkelium is element 97, 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 | 14.8 g/cm³ | Terrain → |
|---|---|---|
| Melting point | 1,259 K · 986 °C | Terrain → |
| Boiling point | 2,900 K · 2,627 °C | Terrain → |
| Electronegativity | 1.30 | Terrain → |
| First ionization energy | 601 kJ/mol | Terrain → |
| Atomic weight | 247 u | Terrain → |
| Crustal abundance | Not measured | Terrain → |
| Discovered | 1949 | 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 22 mg batch made at Oak Ridge in 2009 served as the target for the first six atoms of element 117 at Dubna.
- Named after the California city that hosts a national lab. Just over one gram has been made in the US since 1967.
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 Berkelium
Watch it fly into its seat, or raise the whole spiral into a landscape and see where it peaks.