Elements / 51
51Sb121.76
Antimony
Metalloid · p-block · ring O · spoke 15
Antimony is element 51, a metalloid. It sits on ring O (period 5) on spoke 15, the pnictogens. Follow that spoke toward the center and out again to find its chemical relatives.
Properties
| Density | 6.7 g/cm³ | Terrain → |
|---|---|---|
| Melting point | 904 K · 631 °C | Terrain → |
| Boiling point | 1,908 K · 1,635 °C | Terrain → |
| Electronegativity | 2.05 | Terrain → |
| First ionization energy | 834 kJ/mol | Terrain → |
| Atomic weight | 121.76 u | Terrain → |
| Crustal abundance | 0.2 ppm | Terrain → |
| Discovered | Known since antiquity | 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
- Once swallowed as a medicinal pill made of the pure element, which could be reused by others after it passed through the body.
- Its sulfide was kohl, an eye cosmetic, in predynastic Egypt; today it stiffens plates in lead-acid batteries and boosts flame retardants.
Checked against en.wikipedia.org.
Spoke 15: Pnictogens
Ring O (period 5)
Play with Antimony
Watch it fly into its seat, or raise the whole spiral into a landscape and see where it peaks.