Today's puzzle

Elements / 76

76Os190.23

Osmium

Transition metal · d-block · ring P · spoke 8

Osmium is element 76, a transition metal. It sits on ring P (period 6) on spoke 8. Follow that spoke toward the center and out again to find its chemical relatives.

HHeLiBeBCNOFNeNaMgAlSiPSClArKCaScTiVCrMnFeCoNiCuZnGaGeAsSeBrKrRbSrYZrNbMoTcRuRhPdAgCdInSnSbTeIXeCsBaLaCePrNdPmSmEuGdTbDyHoErTmYbLuHfTaWReOsIrPtAuHgTlPbBiPoAtRnFrRaAcThPaUNpPuAmCmBkCfEsFmMdNoLrRfDbSgBhHsMtDsRgCnNhFlMcLvTsOg119120

Properties

Density22.6 g/cm³The densest of 99Terrain →
Melting point3,306 K · 3,033 °C3rd highest melting point of 97Terrain →
Boiling point5,285 K · 5,012 °C4th highest boiling point of 96Terrain →
Electronegativity2.20Terrain →
First ionization energy840 kJ/molTerrain →
Atomic weight190.233 uTerrain →
Crustal abundance0.0015 ppmTerrain →
Discovered1803Terrain →

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

  1. Its alloys once tipped phonograph styli, in the late 78 rpm and early LP and 45 record era.
  2. The densest stable element, about twice as dense as lead; its name is Greek for smell, after its volatile oxide.

Checked against en.wikipedia.org.

Spoke 8

Ring P (period 6)

Play with Osmium

Watch it fly into its seat, or raise the whole spiral into a landscape and see where it peaks.