rubidium
What is the opposite of rubidium? Here is what we hold, with its meaning and related words.
Noun — A soft, highly reactive metallic element with the symbol Rb and atomic number 37.
We haven't recorded synonyms for rubidium yet. You can still read its full definition, where it comes from, or words that rhyme with it.
How to use rubidium
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rubidium atom
A technical word from chemistry, used in science teaching and writing.
Etymology
The German chemist R. W. Bunsen coined the name in 1861 from the Latin word rubidus, meaning red. It refers to the two red lines in the element's spectrum.
Full origin of rubidium →Frequently asked questions
What is rubidium?
Rubidium is a chemical element with the symbol Rb and atomic number 37. It is a soft, very reactive metal in the alkali group.
Where does the word rubidium come from?
It comes from the Latin rubidus, meaning red, because the element's spectrum has two red lines. Bunsen coined it in 1861.
What is the symbol for rubidium?
The symbol is Rb.
