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RB
Definition of Rb
🔉
Noun
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
rubidium
- atomic number 37
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
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