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fluorine    音标拼音: [fl'ʊr,in] [fl'ɔr,in]
n. 氟[非金属元素]

氟[非金属元素]

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
    Fluorine is a chemical element; it has symbol F and atomic number 9 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
  • 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
    Is fluorine (element 19) gas a metal metalloid nonmetal, discovery date, properties (atomic number, color, melting point, electron configuration), important applications
  • Fluorine: Element Properties and Uses - samaterials. com
    Fluorine is a highly reactive and electronegative chemical element known for its unique properties and various applications in both industrial and scientific fields
  • Fluorine Element Facts - chemicool. com
    Fluorine is the most electronegative element This means that in molecules fluorine attracts electrons more powerfully than any other element can Hydrofluoric acid, HF, dissolves glass Its fluoride ions have a high affinity for calcium and can cause death by interfering with the body’s blood calcium metabolism when absorbed through the skin
  • 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 From the non-stick coating on cookware to the compounds used in dental care, fluorine and its compounds have become important
  • Fluorine Facts - Atomic Number 9 or F - ThoughtCo
    Get periodic table facts on the chemical and physical properties of the element fluorine Fluorine is atomic number 9 with element symbol F
  • Facts About Fluorine - Live Science
    The most reactive element on the Periodic Table, fluorine has a violent history in the quest for its discovery Despite the difficult and sometimes explosive properties of fluorine, it is a vital
  • Fluorine Reactions - Periodic Table of Videos - YouTube
    More links in description below ↓↓↓Here's all the camera angles and slow motion footage of the fluorine reactions we filmed with Professor Eric Hope It reac





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