Elements / 31
31Ga69.723
Gallium
Post-transition metal · p-block · ring N · spoke 13
Gallium is element 31, a post-transition metal. It sits on ring N (period 4) on spoke 13, the boron group. Follow that spoke toward the center and out again to find its chemical relatives.
Properties
| Density | 5.91 g/cm³ | Terrain → |
|---|---|---|
| Melting point | 303 K · 30 °C | Terrain → |
| Boiling point | 2,673 K · 2,400 °C | Terrain → |
| Electronegativity | 1.81 | Terrain → |
| First ionization energy | 579 kJ/mol | Terrain → |
| Atomic weight | 69.7231 u | Terrain → |
| Crustal abundance | 19 ppm | Terrain → |
| Discovered | 1875 | 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 rumour said its discoverer named it after himself, since le coq is gallus in Latin. He was anxious to deny it.
- Found by spectroscopy in 1875, filling Mendeleev's eka-aluminium gap. Named in honour of France, by its Latin name.
Checked against vanderkrogt.net.
Spoke 13: Boron group
Ring N (period 4)
Play with Gallium
Watch it fly into its seat, or raise the whole spiral into a landscape and see where it peaks.