noun
- a pale yellow poisonous gas that is a chemical element, the most reactive of all elements
Usage: chemistry
Examples
- Fluorine is the most electronegative element on the periodic table.
- The chemical symbol for fluorine is F.
- Fluorine compounds are used in toothpaste to prevent tooth decay.
- Scientists must handle fluorine gas with extreme caution due to its reactivity.
- Fluorine has an atomic number of 9.
- Many refrigerants contain fluorine compounds.