rubidium
Noun
-
is a type of: metal, metallic element - any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc.substance meronym:
- carnallite - a white or reddish mineral consisting of hydrous chlorides of potassium and magnesium; used as a fertilizer and as a source of potassium and magnesium
- lepidolite - a mineral of the mica group; an important source of lithium
- pollucite - a rare mineral that is an important source of cesium
same as: atomic number 37, rb
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