Elements / 21
21Sc44.956
Scandium
Transition metal · d-block · ring N · spoke 3
Scandium is element 21, a transition metal. It sits on ring N (period 4) on spoke 3. Follow that spoke toward the center and out again to find its chemical relatives.
Properties
| Density | 2.98 g/cm³ | Terrain → |
|---|---|---|
| Melting point | 1,814 K · 1,541 °C | Terrain → |
| Boiling point | 3,109 K · 2,836 °C | Terrain → |
| Electronegativity | 1.36 | Terrain → |
| First ionization energy | 633 kJ/mol | Terrain → |
| Atomic weight | 44.9559 u | Terrain → |
| Crustal abundance | 22 ppm | Terrain → |
| Discovered | 1879 | 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
- Mendeleev predicted it as ekaboron; Lars Fredrick Nilson found it in 1879 in the spectra of euxenite and gadolinite.
- Its aluminium alloys went into MiG-29 fighters, bicycle frames and baseball bats. Named for the Latin word for a northern European region.
Checked against livescience.com.
Spoke 3
Ring N (period 4)
Play with Scandium
Watch it fly into its seat, or raise the whole spiral into a landscape and see where it peaks.