| Formula / Notation | Rb |
|---|---|
| CAS Number | 7440-17-7 |
| Molecular Weight | 85.47 |
| Melting Point | 39.3 |
| Boiling Point | 688.0 |
| Density | 1.53 |
| Solubility | Reacts violently with water |
| Appearance | Soft, silvery-white metal |
| Also Known As | Rb, rubidium metal |
| Category | Elements |
What is Rubidium?
Rubidium is a soft, silvery-white alkali metal, atomic number 37. Highly reactive - ignites spontaneously in air and reacts explosively with water. Used in atomic clocks and as getter in vacuum tubes.
Formula & Notation
IUPAC Name: Rubidium
Other Names / Synonyms: Rb, rubidium metal
Properties & Characteristics
Physical Data
| Property | Value |
|---|---|
| Melting Point | 39.3 |
| Boiling Point | 688.0 |
| Density | 1.53 |
| Molecular Weight | 85.47 |
| Solubility | Reacts violently with water |
| Appearance | Soft, silvery-white metal |
Uses & Applications
Safety Information
Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.
Key Facts
Frequently Asked Questions
Rubidium is a soft, silvery-white alkali metal, atomic number 37. Highly reactive - ignites spontaneously in air and reacts explosively with water. Used in atomic clocks and as getter in vacuum tubes.
Atomic clocks (rubidium frequency standard). Photoelectric cells. Vacuum tube getter. Research in quantum mechanics (Bose-Einstein condensates). Rubidium vapor for magnetometers.
Reacts violently with water producing H2 and RbOH (fire/explosion). Ignites spontaneously in air. Causes severe chemical burns. Store in dry mineral oil or sealed under inert gas. More reactive than potassium.
The formula or notation for Rubidium is: Rb