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fluorine    音標拼音: [fl'ʊr,in] [fl'ɔr,in]
n. 氟[非金屬元素]

氟[非金屬元素]

fluorine
n 1: 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 [synonym: {fluorine}, {F}, {atomic number 9}]

Fluorine \Flu"or*ine\ (fl[=u]"[o^]r*[i^]n or fl[=u]"[o^]r*[=e]n;
104), n. [NL. fluorina: cf. G. fluorin, F. fluorine. So
called from its occurrence in the mineral fluorite.] (Chem.)
A non-metallic, gaseous element of atomic number 9, strongly
acid or negative, and associated with chlorine, bromine, and
iodine, in the halogen group of which it is the first member.
It always occurs combined, is very active chemically, and
possesses such an avidity for most elements, and silicon
especially, that it can neither be prepared nor kept in glass
vessels, but may be contained in lead vessels. If set free it
immediately attacks a containing glass vessel, so that it was
not isolated until 1886. It is a pungent, corrosive,
colorless gas. Symbol F. Atomic weight 19.00.
[1913 Webster]

Note: Fluorine unites with hydrogen to form hydrofluoric
acid, which is the agent employed in etching glass. It
occurs naturally, principally combined as calcium
fluoride in fluorite, and as a double fluoride of
aluminium and sodium in cryolite.
[1913 Webster]

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  • Fluorine - Wikipedia
    It is the lightest halogen and exists at standard conditions as pale yellow diatomic gas Fluorine is extremely reactive as it reacts with all other elements except for the light noble gases Fluorine in its elemental form is highly toxic Among the elements, fluorine ranks 24th in cosmic abundance and 13th in crustal abundance
  • Fluorine | Uses, Properties, Facts | Britannica
    Fluorine, the most reactive chemical element and the lightest member of the halogen elements Its chemical activity can be attributed to its extreme ability to attract electrons (it is the most electronegative element) and to the small size of its atoms
  • Fluorine - Element information, properties and uses | Periodic Table
    Element Fluorine (F), Group 17, Atomic Number 9, p-block, Mass 18 998 Sources, facts, uses, scarcity (SRI), podcasts, alchemical symbols, videos and images
  • Fluorine Facts, Symbol, Discovery, Properties, Uses
    Denoted by the chemical symbol F, fluorine (pronounced as FLU-eh-reen) is a highly reactive nonmetal existing naturally in the state of gas
  • What Is Fluorine? From Element to Everyday Uses
    Fluorine is a chemical element with the atomic symbol F and atomic number 9, and it is the lightest member of the halogen family of elements It is a fundamental component of the world around us, appearing in a diverse range of natural minerals and synthetic materials
  • Fluorine Element Facts - chemicool. com
    Fluorine is the most reactive and the most electronegative of all the elements Fluorine is a pale yellow, diatomic, highly corrosive, flammable gas, with a pungent odor
  • Fluorine: Element Properties and Uses - samaterials. com
    Fluorine (symbol: F, atomic number: 9) is a halogen in the periodic table, located in Group 17 It is the most reactive and electronegative of all elements, making it an essential component in various chemical processes
  • 10 Interesting Fluorine Facts - ThoughtCo
    Get interesting facts about the discovery, properties, uses, and abundance of the element fluorine (symbol F, atomic number 9)
  • Facts About Fluorine - Live Science
    Fluorine is also the most electronegative element Fluorine attracts electrons more readily than any other element On average, the amount of fluorine in the human body is three milligrams
  • Fluorine (F) Element: Occurrence, Important Properties, Uses
    Fluorine (F) is the heaviest of the halogen elements (Group 17; Group VIIa) and the chemical element with the highest reactivity Even the noble gases krypton, xenon, and radon can combine with fluorine to produce compounds





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