Elements / 56
56Ba137.33
Barium
Alkaline earth metal · s-block · ring P · spoke 2
Barium is element 56, an alkaline earth metal. It sits on ring P (period 6) on spoke 2, the alkaline earth metals. Follow that spoke toward the center and out again to find its chemical relatives.
Properties
| Density | 3.51 g/cm³ | Terrain → |
|---|---|---|
| Melting point | 1,000 K · 727 °C | Terrain → |
| Boiling point | 2,118 K · 1,845 °C | Terrain → |
| Electronegativity | 0.89 | Terrain → |
| First ionization energy | 503 kJ/mol | Terrain → |
| Atomic weight | 137.328 u | Terrain → |
| Crustal abundance | 425 ppm | Terrain → |
| Discovered | 1772 | 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
- Alchemists prized the Bologna stone, a form of its ore that glowed for years after exposure to light; its glow was described in 1602.
- Its name comes from the Greek for heavy; patients swallow its sulfate before X-rays of the gut, and it turns fireworks apple green.
Checked against en.wikipedia.org.
Spoke 2: Alkaline earth metals
Ring P (period 6)
Play with Barium
Watch it fly into its seat, or raise the whole spiral into a landscape and see where it peaks.