37Rb
Element 37
Rubidium
Alkali metals
Rubidium is a chemical element with symbol Rb and atomic number 37.
Key data
- Atomic number
- 37
- Atomic mass
- 85.468 u
- Group / Period
- 1 / 5
- Block
- s-block
- Phase at STP
- Solid
- Density
- 1.532 g/cm³
- Melting point
- 39.3 °C
- Boiling point
- 687.9 °C
- Electron configuration
- [Kr] 5s1
Common uses
- •Atomic clocks
- •Specialty glass
- •Photocells
Discovery
Year: 1861
Discovered by: Robert Bunsen
Frequently asked questions
What is the atomic number of Rubidium?
Rubidium has atomic number 37. Its symbol is Rb and its atomic mass is 85.468 u.
What category of element is Rubidium?
Rubidium is classified as alkali metals. It sits in group 1, period 5 of the periodic table.
What is Rubidium used for?
Common uses of Rubidium include: Atomic clocks, Specialty glass, Photocells.
When was Rubidium discovered?
Rubidium was discovered in 1861 by Robert Bunsen.
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