45Rh102.91
Rhodium
Transition metal · element 45 · group 9, period 5
Quick facts
| Symbol | Rh |
|---|---|
| Atomic number | 45 |
| Relative atomic mass | 102.91 |
| Category | Transition metal |
| Position | group 9, period 5 |
| State at 20 °C | Solid |
| Melting point | 1,964 °C |
| Boiling point | 3,695 °C |
| Density | 12.41 g/cm³ |
| Electronegativity | 2.28 |
| Electron configuration | [Kr] 4d8 5s1 |
About Rhodium
Rhodium has the symbol Rh and atomic number 45, which means every rhodium atom has 45 protons in its nucleus and, in a neutral atom, 45 electrons. At room temperature it is a solid.
Transition metals sit in the middle block of the periodic table. They are usually hard, dense and strong, often form coloured compounds, can have more than one ion charge, and many are useful catalysts.
It melts at 1,964 °C and boils at 3,695 °C.
Explore it
See where rhodium sits, and drag the temperature slider to watch it melt and boil, on the interactive periodic table. Practise with quizzes on OmniEx.