Dictionary
a soft silvery metallic element of the alkali metal group burns in air and reacts violently in water occurs in carnallite and lepidolite and pollucite
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Wikipedia
RB or Rb may stand for: the chemical element Rubidium.the IATA code for Syrian Arab Airlines.the Retinoblastoma protein, found mutated in many cancers, including retinoblastoma cancer.Hyundai RBRB, the name used for a series of buses manufactured by Hyundai Motor Company.an abbreviation for right back, a defensive position in football (soccer).disambig Category:Lists of two-letter combinationsko:RBsl:RB
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