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Rb

Symbol, Chemistry
1.

R&B

Also, r&b, R and B.
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for Rb

Rb

Chemical symbol
1.
rubidium
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Rb in Medicine

Rb
The symbol for the element rubidium.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Rb in Science
Rb  
The symbol for rubidium.
rubidium
  (r-bĭd'ē-əm)   
Symbol Rb
A soft, silvery-white metallic element of the alkali group. It ignites spontaneously in air and reacts violently with water. Rubidium is used in photoelectric cells, in making vacuum tubes, and in radiometric dating. Atomic number 37; atomic weight 85.47; melting point 38.89°C; boiling point 688°C; specific gravity (solid) 1.532; valence 1, 2, 3, 4. See Periodic Table.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Related Abbreviations for Rb

Rb

rubidium

RB

  1. Botswana (international vehicle ID)
  2. reciprocal beneficiary
  3. running back
The American Heritage® Abbreviations Dictionary, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Encyclopedia Article for Rb

chemical element of Group 1 (also called Group Ia) in the periodic table, the alkali metal group. Rubidium is the second most reactive metal and is very soft, with a silvery-white lustre. A brief treatment of rubidium follows. For full treatment, see alkali metal.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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