Transition metal

Rhodium

Rhodium (Rh) has atomic number 45. PubChem classifies it as transition metal.

Atomic number

45

Symbol

Rh

Atomic weight (source value)

102.9055

Electron configuration

[Kr]5s1 4d8

Standard state

Solid

Electronegativity (Pauling)

2.28

Melting point (K)

2237

Boiling point (K)

3968

Density (g/cm³)

12.4

Oxidation states

+3

Understanding this entry

Atomic number is the number of protons in the nucleus. Properties are reference values and may depend on conditions and measurement conventions. An atomic weight is not the mass of every isotope. For elements without a standard atomic weight, a source may report an isotope mass number. Blank source values are shown as unavailable rather than estimated.

Further reading and reference: NIH PubChem source dataset ↗. Values and educational summaries are not a substitute for specialised advice.