45
Rh
102.91
Rhodium
Element 45 · 102.91 u · d-block
transition metal
One of the rarest and most expensive metals. Primary use is in catalytic converters for automobiles.
Phase (STP)
Solid
Melting Point
1964 °C
Boiling Point
3695 °C
Density
12.41 g/cm³
Electronegativity
2.28
Atomic Radius
135 pm
Ionization Energy
720 kJ/mol
Electron Affinity
110 kJ/mol
Discovered
1803 · William Hyde Wollaston
Electron Configuration
[Kr] 4d8 5s1
Electron Orbitals
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