Today's puzzle

Elements / 13

13Al26.982

Aluminum

Post-transition metal · p-block · ring M · spoke 13

Aluminum is element 13, a post-transition metal. It sits on ring M (period 3) on spoke 13, the boron group. Follow that spoke toward the center and out again to find its chemical relatives.

HHeLiBeBCNOFNeNaMgAlSiPSClArKCaScTiVCrMnFeCoNiCuZnGaGeAsSeBrKrRbSrYZrNbMoTcRuRhPdAgCdInSnSbTeIXeCsBaLaCePrNdPmSmEuGdTbDyHoErTmYbLuHfTaWReOsIrPtAuHgTlPbBiPoAtRnFrRaAcThPaUNpPuAmCmBkCfEsFmMdNoLrRfDbSgBhHsMtDsRgCnNhFlMcLvTsOg119120

Properties

Density2.7 g/cm³Terrain →
Melting point933 K · 660 °CTerrain →
Boiling point2,743 K · 2,470 °CTerrain →
Electronegativity1.61Terrain →
First ionization energy578 kJ/molTerrain →
Atomic weight26.9815 uTerrain →
Crustal abundance82,300 ppm3rd most abundant in Earth's crust of 92Terrain →
Discovered1746Terrain →

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. Once so hard to produce that its cost exceeded gold, it was used to cap the Washington Monument, completed in 1885.
  2. The most abundant metal in Earth's crust; drink cans and kitchen foil are made of it.

Checked against en.wikipedia.org.

Spoke 13: Boron group

Ring M (period 3)

Play with Aluminum

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