NO. 045Transition

Rh

Rhodium

Rhodium is a shiny, rare metal used mainly in catalytic converters and jewelry due to its reflectivity.

Crystal Structure

Face-centered cubic (fcc)

Atomic Mass102.91 u

Density12.41 g/cm³

Melting Point2237 K

Boiling Point3968 K

Atomic Radius134 pm

Electronegativity2.28

Ionization Energy720 kJ/mol

Electron Affinity110 kJ/mol

Bonding TypeMetallic

Oxidation States1, 3

Acid/BaseNeutral

ReactivityLow

Electron Configuration

[Kr] 4d8 5s1

Discovered ByWilliam Hyde Wollaston

Year1803

Known Isotopes

Rh-103