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PERIODIC TABLE
Rubidium
Atomic No. 37
Rb
Rubidium
About Rubidium
Rubidium is an alkali metal with atomic number 37 that forms compounds predominantly in the +1 oxidation state. Rubidium vapor is used in atomic clocks and precision frequency references. Rubidium bromide crystals transmit infrared light and are of interest for specialized optical applications.
Properties
- Atomic Number
- 37
- Atomic Symbol
- Rb
- Atomic Mass
- 85.4678
- CAS No.
- 7440-17-7
- Density
- 1.532 g/cm³
- Series
- alkali metal
- Melting Point
- 39.31°C
- Boiling Point
- 688°C
- Thermal Conductivity
- 0.58 W/cm °C
- Heat of Fusion
- 2.19 kJ/mol
- Heat of Vaporization
- 71 kJ/mol
- Electronegativity
- 0.82 pauling
- Crystal Structure
- Cubic
- Electrical Conductivity
- 8.3×106 S/m
Rubidium Products
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