Rhodium (Rh)
Rhodium
Rhodium (Rh) is a transition metal in period 5, group 9. Its relative atomic mass is 102.91 and the molar mass of the atom is 102.91 g/mol.
Atomic number 45
Atomic mass 102.91
Molar mass 102.91 g/mol
Category Transition metal Solid
Properties of rhodium
| Atomic number | 45 |
|---|---|
| Symbol | Rh |
| Latin name | Rhodium |
| Relative atomic mass | 102.91 |
| Molar mass | 102.91 g/mol |
| Group, period, block | 9, 5, d |
| Category | Transition metal |
| State at 20 °C | Solid |
| Electron configuration | [Kr] 4d⁸ 5s¹ |
| Electronegativity (Pauling) | 2.28 |
| Atomic radius | 135 pm |
Electron configuration of rhodium
Electrons per shell
K2L8M18N16O1
Full notation
1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d⁸ 5s¹
Noble-gas notation
45 protons · 45 electrons[Kr] 4d⁸ 5s¹
Formula and compounds of rhodium
Simple substanceRhrhodiumMolar mass of Rh: 102.91 g/mol
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Frequently asked questions
The relative atomic mass of rhodium is 102.91, so the molar mass of the atom is 102.91 g/mol.
Full: 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d⁸ 5s¹. Noble-gas notation: [Kr] 4d⁸ 5s¹.