Rubidium Definition

ro͝o-bĭdē-əm
noun
A soft, silvery-white, metallic chemical element, one of the alkali metals, that ignites spontaneously in air and reacts violently in water: used in photocells and in filaments of vacuum tubes: symbol, Rb; at. no. 37
Webster's New World
Synonyms:
  • atomic number 37
  • rb

Origin of Rubidium

  • A New Latin word derived by German chemist R. W. Bunsen in 1861, from Latin rubidus (“red") because its spectrum has two red lines.

    From Wiktionary

  • From Latin rūbidus red reudh- in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition

Rubidium Sentence Examples

  • Rubidium, caesium, thallium, indium and gallium were first discovered by means of this instrument; the study of the rare earths is greatly facilitated, and the composition of the heavenly bodies alone determinable by it.

  • They are silicates, usually orthosilicates, of aluminium together with alkalis (potassium, sodium, lithium, rarely rubidium and caesium), basic hydrogen, and, in some species magnesium, ferrous and ferric iron, rarely chromium, manganese and barium.

  • The species lepidolite is largely used for the manufacture of lithium and rubidium salts.

  • It combines with alkaline chlorides - potassium, rubidium and caesium - to form crystalline plumbichlorides; it also forms a crystalline compound with quinoline.

  • The solubility of the various alums in water varies greatly, sodium alum being readily soluble in water, whilst caesium and rubidium alums are only sparingly soluble.

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Words Starting With

RRURUB

Words Ending With

MUMIUM

Unscrambles

rubidium

Words Starting With R and Ending With M

Starts With R & Ends With MStarts With RU & Ends With MStarts With R & Ends With UM

Word Length

8 Letter Words8 Letter Words Starting With R8 Letter Words Ending With M
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