Elements / 45
45Rh102.91
Rhodium
Transition metal · d-block · ring O · spoke 9
Rhodium is element 45, a transition metal. It sits on ring O (period 5) on spoke 9. Follow that spoke toward the center and out again to find its chemical relatives.
Properties
| Density | 12.4 g/cm³ | Terrain → |
|---|---|---|
| Melting point | 2,237 K · 1,964 °C | Terrain → |
| Boiling point | 3,968 K · 3,695 °C | Terrain → |
| Electronegativity | 2.28 | Terrain → |
| First ionization energy | 720 kJ/mol | Terrain → |
| Atomic weight | 102.906 u | Terrain → |
| Crustal abundance | 0.001 ppm | Terrain → |
| Discovered | 1804 | 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
- In 1979 the Guinness Book of World Records gave Paul McCartney a disc plated with it, a metal rarer than one part per billion in the crust.
- Named for the rose color of one of its chlorine compounds; 81% of 2012 use went into catalytic converters, and it plates white gold.
Checked against en.wikipedia.org.
Spoke 9
Ring O (period 5)
Play with Rhodium
Watch it fly into its seat, or raise the whole spiral into a landscape and see where it peaks.