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{{Element | name=Rubidium | symbol=Rb | anumber=37 | amass=85.47 amu | state=solid | class=Alkali metal | cstructure=Body-Centered Cubic | color=Silver | date=1861 | discname=Bunsen, R.W. and Kirchoff, G. | origname=From the Latin ''Rubidius'', meaning "deep red" | uses=scientific research | obtained=lepidolite, pollucite, carnallite }}

{{Element | name=Rubidium | symbol=Rb | anumber=37 | amass=85.47 amu | state=solid | class=Alkali metal | cstructure=Body-Centered Cubic | color=Silver | date=1861 | discname=Bunsen, R.W. and Kirchoff, G. | origname=From the Latin ''Rubidius'', meaning "deep red" | uses=scientific research | obtained=lepidolite, pollucite, carnallite }}

'''Rubidium''' is an [[element]] in the [[alkali metal]]s class of the [[periodic table]]. It is so chemically active that it is never found free (in elemental form) in nature, and can sometimes catch fire on mere exposure to [[air]].<ref>Wile, Dr. Jay L. ''Exploring Creation With Physical Science''. Apologia Educational Ministries, Inc. 1999, 2000</ref>

'''Rubidium''' is an [[element]] in the [[alkali metal]]s class of the [[periodic table of the elements|periodic table]]. It is so chemically active that it is never found free (in elemental form) in nature, and can sometimes catch fire on mere exposure to [[air]].<ref>Wile, Dr. Jay L. ''Exploring Creation With Physical Science''. Apologia Educational Ministries, Inc. 1999, 2000</ref>

It was discovered by Robert Bunsen and Gustav Kirchoff, using their newly invented spectroscope.  It (along with [[cesium]]) was identified by a previously unseen red spectral line in the analysis of mineral water from a [[Germany|German]] spa.  The name comes from that color.

It was discovered by Robert Bunsen and Gustav Kirchoff, using their newly invented spectroscope.  It (along with [[cesium]]) was identified by a previously unseen red spectral line in the analysis of mineral water from a [[Germany|German]] spa.  The name comes from that color.