Rubidium was discovered in 1861 by German chemists Robert Bunsen (1811-99) and Gustav Kirchhoff (1824-87), in the mineral lepidolite through the use of a spectroscope. Oracle 10g study guide pdf download freebackuptype.
Rubidium was discovered in 1861 by German chemists Robert Bunsen (1811-99) and Gustav Kirchhoff (1824-87). Rubidium is used to make atomic clocks. An atomic clock is a device for keeping very exact time. A radioactive isotope of rubidium is also used to measure the age of very old objects. Rubidium forms a number of mercury amalgams. Because of the increased specific volume of rubidium, as compared with the lighter alkali metals, there is a lesser tendency for it to form alloy systems with other metals. Element Properties; atomic number: 37: atomic weight: 85.47: melting point: 38.9 °C (102 °F) boiling point: 688 °C (1,270 °F. A large number of radioactive isotopes have been artificially prepared, from rubidium-79 to rubidium-95. One estimate of the age of the solar system as 4.6 billion years is based on the ratio of rubidium-87 to strontium -87 in a stony meteorite.
Name: RubidiumSymbol: RbAtomic number: 37Atomic weight: 85.468State: solidGroup, period, block: 1, 5, sColor: grey white
Classification: alkali metalElectron configuration: 5s1Physical properties
Atomic properties
Electron Configuration
Rubidium Has An Atomic Number Of 37
Isotopes
Atomic Number Of Rubidium
There are two naturally occurring of rubidium exist, 85Rb, and 87Rb.