Rubidium is a soft, silvery-white alkali metal. It is highly reactive and is used in research, particularly in studies of atomic interactions and superconductivity.
| Property | Value |
|---|---|
| Atomic Number | 37 |
| Symbol | Rb |
| Atomic Mass | 85.4678 u |
| Electron Configuration | 1s2 2s2 2p6 3s2 3p6 4s2 5s1 |
| State at Room Temperature | Solid |