Robert Bunsen and Gustav Kirchhoff discovered the element Rubidium in 1861 with the help of a spectroscope while analyzing a mineral called lepidolite. When the mineral was heated, Bunsen and ...
Rubidium (Rb) is a soft and highly reactive member of the alkali group of metals. Rubidium is widely distributed throughout nature, but only occurs in small amounts (its abundance in the earth’s crust ...
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