45
Rh
Rhodium
Transition metal period 5 group 9 d-block discovered: 1803
As a chemical element
Properties of the atom — they do not depend on what substance it is part of.
- Atomic number
- 45
- Atomic mass
- 102.9055 a.m.u.
- Electron configuration
- [Kr]5s1 4d8
- Electronegativity
- 2.28 on the Pauling scale
- Atomic radius
- 195 pm
- Ionization energy
- 7.459 eV
- Electron affinity
- 1.137 eV
- Oxidation states
- +3
As a simple substance
Properties of the substance these atoms form under ordinary conditions.
- State at 25 °C
- Solid
- Melting point
- 2237 K (1 963,85 °C)
- Boiling point
- 3968 K (3 694,85 °C)
- Density
- 12.4 g/cm³