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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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  • Spontaneity and nature of attack of fluorine gas on aluminum
    What is the nature of the reaction of attack of fluorine gas on aluminium metal? Is it spontaneous in nature? I have studied reactions of halogens on aluminium, but it had no information about fluo
  • Why is fluorine a oxidising agent? - Chemistry Stack Exchange
    Fluorine has low bond dissociation enthalpy and high hydration enthalpy due to which fluorine is a good oxidizing agent Fluorine is achieving octet, so electron gain is favorable I found another source stating that bond dissociation enthalpy is the major driving factor My questions (along with reasons why fluorine shouldn't be oxidising agent)
  • Why is fluoroantimonic acid so strong? - Chemistry Stack Exchange
    No water! $\ce {SbF5}$ is a tremendously strong Lewis acid: high oxidation state, fluorine electron withdrawal, and terrible mismatch of pi-orbital size inhibiting electron back donation
  • reaction mechanism - Fluorine detection in organic compounds . . .
    Fluorine in organic compounds does readily not participate in analytical detection tests A straightforward method for the qualitative detection of fluorine in organic compounds requires fusion with an alkali metal (Na, K), followed by fluoride ion detection via zirconium alizarin reaction
  • inorganic chemistry - Why doesnt fluorine harm the ozone layer the way . . .
    I don't understand the chemistry here: fluorine is a halogen too I read that fluorine in the atmosphere readily forms HF, which is (somewhat) stable and doesn't catalytically break down ozone But,
  • How is fluorine gas contained and transported, why arent the metal . . .
    It was made from the video Fluorine - Periodic Table of Videos I noticed that the cylinder containing the fluorine gas "filled up on the roof" in the video looks like it is made out of metal, as is the tube feeding the gas to the combustion sample The liquification experiment also shown in the video uses a flexible tube that appears to be
  • Why are fluoroalkyl chains hydrophobic oleophobic?
    Importantly, the difference between the fluorine and chlorine compounds is much larger than that of the chlorine and bromine compounds Additionally, the fact that $\ce {CF4}$ boils only slightly higher than $\ce {CH4}$ indicates that the molecule basically loses all interactions when going from the chlorine to the fluorine
  • What is the geometrical structure of OF₂? - Chemistry Stack Exchange
    The angular structure is actually a distortion produced by the bond pair electrons (between oxygen and fluorine) and lone pair electrons of oxygen since every structure tries to decrease its net potential energy they assume this shape
  • Is there any chemical that can destroy PTFE or Teflon?
    The elimination of fluorine due to $\ce {C-F}$ bond break is possible; however, since $\ce {C-C}$ bonds are clearly weaker than $\ce {C-F}$ bonds, $\ce {C-C}$ bond break predominates Therefore, the primary effect of radiation on PTFE is the scission of the polymer chain (breaking of the large polymer molecule into smaller parts)
  • Can fluorine act as the central atom in interhalogen compounds?
    19 Why can't fluorine be the central atom in inter-halogen compounds? A $\ce {F-F}$ bond is weaker than a $\ce {F-X}$ bond and thus, fluorine should be happy to form inter-halogen compounds But, why doesn't it act as the central atom? In my textbook, the reason given is because of the high electronegativity of fluorine atoms





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