fluorine
/fluorine/
Học thuậtThân thiện
A scientist carefully handles a sealed container of fluorine gas in the laboratory.
Definition
- Noun:
- A chemical element: Fluorine is a highly reactive, pale yellow gas that belongs to the halogen group on the periodic table. It is the most electronegative and reactive of all elements.
- A specific substance: It refers to the pure elemental form, which is a toxic, corrosive, and pungent gas under standard conditions.
Examples of Usage
- Noun:
- Fluorine is essential for the production of many pharmaceuticals.
- The chemist handled the fluorine gas with extreme caution due to its reactivity.
- Toothpaste often contains compounds derived from fluorine to prevent cavities.
Advanced Usage
- In chemical terminology: Fluorine is denoted by the symbol 'F' and has the atomic number 9.
- The formula for the molecule is C₂F₄, which contains four fluorine atoms.
- In environmental science: Refers to fluorine-containing compounds.
- The treaty aims to reduce the emission of fluorine-based greenhouse gases.
Variants and Related Words
- Fluoride (n): A compound containing fluorine, often an anion (F⁻), commonly added to drinking water and dental products.
- Sodium fluoride is used in water fluoridation.
- Fluorinate (v): To introduce fluorine into a compound.
- The process will fluorinate the hydrocarbon to create a new refrigerant.
- Fluorination (n): The chemical process of adding fluorine.
- Fluorite (n): A mineral (calcium fluoride, CaF₂) that is a common source of fluorine.
Synonyms
- Element 9: Referring to its atomic number.
- Halogen gas: Referring to its group classification (though this group includes other elements like chlorine and bromine).
Related Phrases
- Fluorine chemistry: The branch of chemistry dealing with fluorine and its compounds.
- Fluorine compound: Any chemical substance that contains fluorine atoms.
Related Idioms
(There are no common idioms centered solely on the word "fluorine" due to its technical nature. It is primarily used in scientific contexts.)
A scientist carefully handles a sealed container of fluorine gas in the laboratory.
Noun
- a nonmetallic univalent element belonging to the halogens; usually a yellow irritating toxic flammable gas; a powerful oxidizing agent; recovered from fluorite or cryolite or fluorapatite