Elements / 103
103Lr[266]
Lawrencium
Transition metal · d-block · ring Q · spoke 3
Lawrencium is element 103, a transition metal. It sits on ring Q (period 7) on spoke 3. Follow that spoke toward the center and out again to find its chemical relatives.
Properties
| Density | Not measured | Terrain → |
|---|---|---|
| Melting point | Not measured | Terrain → |
| Boiling point | Not measured | Terrain → |
| Electronegativity | 1.30 | Terrain → |
| First ionization energy | 470 kJ/mol | Terrain → |
| Atomic weight | 266 u | Terrain → |
| Crustal abundance | Not measured | Terrain → |
| Discovered | 1961 | 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
- Its original symbol was Lw. Oddly, its outer electrons are s2p, not the s2d of its lighter homolog lutetium.
- Honors the inventor of the cyclotron. First important work on it was done at Berkeley in 1961 by Albert Ghiorso's team.
Checked against en.wikipedia.org.
Spoke 3
Ring Q (period 7)
Play with Lawrencium
Watch it fly into its seat, or raise the whole spiral into a landscape and see where it peaks.