Today's puzzle

Elements / 62

62Sm150.36

Samarium

Lanthanide · f-block · ring P

Samarium is element 62, a lanthanide. It is one of the lanthanides, which the spiral keeps in line on ring P instead of exiling them to a strip below the table.

HHeLiBeBCNOFNeNaMgAlSiPSClArKCaScTiVCrMnFeCoNiCuZnGaGeAsSeBrKrRbSrYZrNbMoTcRuRhPdAgCdInSnSbTeIXeCsBaLaCePrNdPmSmEuGdTbDyHoErTmYbLuHfTaWReOsIrPtAuHgTlPbBiPoAtRnFrRaAcThPaUNpPuAmCmBkCfEsFmMdNoLrRfDbSgBhHsMtDsRgCnNhFlMcLvTsOg119120

Properties

Density7.52 g/cm³Terrain →
Melting point1,345 K · 1,072 °CTerrain →
Boiling point2,173 K · 1,900 °CTerrain →
Electronegativity1.17Terrain →
First ionization energy545 kJ/molTerrain →
Atomic weight150.362 uTerrain →
Crustal abundance7.05 ppmTerrain →
Discovered1879Terrain →

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. Through a mineral, a Russian mine official became the first person to have an element named after him.
  2. Alloyed with cobalt, it makes magnets that keep their magnetism at temperatures above 700 degrees C.

Checked against edu.rsc.org.

Lanthanides

Ring P (period 6)

Play with Samarium

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