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Francium
/ˈfɹansɪəm/
The chemical element (symbol Fr) with an atomic number of 87. It is an intensely radioactive alkali metal that is not found in nature.
📖 Definitions of "Francium"
noun
- 1
The chemical element (symbol Fr) with an atomic number of 87. It is an intensely radioactive alkali metal that is not found in nature.
- 2
A single atom of this element.
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