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Fluorine

Discussion board (posts 61-80)

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johnasswipe - 10/18/2004 3:56:02 PM

  johnasswipe - 10/18/2004 3:46:39 PM
  what is the cost of florine need to know by tuesday

the cost is 190$/100g

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johnasswipe - 10/18/2004 3:55:23 PM

General
Name Fluorine Symbol F
Atomic number 9 Atomic weight 18.998403
Density @ 293 K 0.001696 g/cm3 Atomic volume 17.1 cm3/mol
Group Halogen Discovered 1886

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States
State (s, l, g) g
Melting point 53.58 K Boiling point 85.1 K
Heat of fusion 0.2552 kJ/mol Heat of vaporization 3.2698 kJ/mol

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Energies
1st ionization energy 1681 kJ/mole Electronegativity 3.98
2nd ionization energy 3374.1 kJ/mole Electron affinity 328 kJ/mole
3rd ionization energy 6050.3 kJ/mole Specific heat 0.82 J/gK
Heat atomization 79 kJ/mole atoms

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Oxidation & Electrons
Shells 2,7 Electron configuration [He] 2s2 2p5
Minimum oxidation number -1 Maximum oxidation number 0
Minimum common oxidation number -1 Maximum common oxidation number 0

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Appearance & Characteristics
Structure layers of F2 Color colorless
Uses fluorocarbons, toothpaste Toxicity yes
Hardness mohs Characteristics diatomic(F2), corrosive

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Reactions
Reaction with air none Reaction with 6M HCl vigorous, =>HF, OF2, ClF3
Reaction with 6M HCl vigorous, =>HF, OF2, ClF3 Reaction with 15M HNO3
Reaction with 6M NaOH vigorous, =>O2, NaF

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Other Forms
Number of isotopes 1 Hydride(s) HF
Oxide(s) OF2 Chloride(s) ClF ClF3 ClF5

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Radius
Ionic radius (2- ion) pm Ionic radius (1- ion) 119 pm
Atomic radius 72 pm Ionic radius (1+ ion) pm
Ionic radius (2+ ion) pm Ionic radius (3+ ion) pm

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Conductivity
Thermal conductivity 0.03 J/m-sec-deg Electrical conductivity 0 1/mohm-cm
Polarizability 0.634 A^3

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Abundance
Source Fluorite (misc) Rel. abund. solar system 2.926 log
Abundance earth's crust 2.8 log Cost, pure 190 $/100g
Cost, bulk $/100g

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johnasswipe - 10/18/2004 3:55:05 PM

  E-mail address Sarah - 10/12/2004 11:25:35 PM
  What is the cost of Fluorine?

190$/100g i just foud this out

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johnasswipe - 10/18/2004 3:53:55 PM

(L. and F. fluere, flow or flux) In 1529, Georigius Agricola described the use of fluorspar as a flux, and as early as 1670 Schwandhard found that glass was etched when exposed to fluorspar treated with acid. Scheele and many later investigators, including Davy, Gay-Lussac, Lavoisier, and Thenard, experimented with hydrofluoric acid, some experiments ending in tragedy. The element was finally isolated in 186 by Moisson after nearly 74 years of continuous effort. Fluorine is the most electronegative and reactive of all elements. It is a pale yellow, corrosive gas, which reacts with practically all organic and inorganic substances. Finely divided metals, glass, ceramics, carbon, and even water burn in fluorine with a bright flame. Until World War II, there was no commercial production of elemental fluorine. The nuclear bomb project and nuclear energy applications, however, made it necessary to produce large quantities. Safe handling techniques have now been developed and it is possible at present to transport liquid fluorine by the ton. Fluorine and its compounds are used in producing uranium (from the hexafluoride) and more than 100 commercial fluorochemicals, including many well-known high-temperature plastics. Hydrofluoric acid is extensively used for etching the glass of light bulbs, etc. Fluorochlorohydrocarbons are extensively used in air conditioning and refrigeration. It has been suggested that fluorine can be substituted for hydrogen wherever it occurs in organic compounds, which could lead to an astronomical number of new fluorine compounds. The presence of fluorine as a soluble fluoride in drinking water to the extent of 2 ppm may cause mottled enamel in teeth, when used by children acquiring permanent teeth; in smaller amounts, however, fluorides are said to be beneficial and used in water supplies to prevent dental cavities. elemental fluorine has been studied as a rocket propellant as it has an exceptionally high specific impulse value. Compounds of fluorine with rare gases have now been confirmed. Fluorides of xenon, radon, and krypton are among those known. Elemental fluorine and the fluoride ion are highly toxic. The free element has a characteristic pungent odor, detectable in concentrations as low as 20 ppb, which is below the safe working level. The recommended maximum allowable concentration for a daily 8-hour time-weighted exposure is 1 ppm.
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johnasswipe - 10/18/2004 3:46:39 PM

what is the cost of florine need to know by tuesday

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E-mail address Richard Hell - 10/17/2004 9:03:41 PM

Do animals or plants use fluorine? Cant it be found inour bodies?
what are some compounds that fluorine forms?
where are these compounds used or found? ASAP i need it before Monday

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E-mail address terry - 10/14/2004 7:30:14 PM

  arandomperson - 10/14/2004 1:15:25 AM
  there is no cost for fluorine because nobody wants to buy it.

their is a cost for flourine

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E-mail address terry - 10/14/2004 7:29:28 PM

  E-mail address terry - 10/14/2004 7:20:14 PM
  what is the cost of flourine their is a cost

i need to know by tuesday

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E-mail address terry - 10/14/2004 7:27:12 PM

  arandomperson - 10/14/2004 1:16:49 AM
  fluorine's in tooth paste because the compund calciumfluoride(ClF) prevents cavities... its written on nearly every toothpaste tube you know....

it reacs with chemicals and protects from cavitys

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E-mail address terry - 10/14/2004 7:26:26 PM

  E-mail address HeY - 5/5/2004 5:32:54 AM
  I nEeD tO aNswEr a FeW qUesTiOnS fOR scIencE..CoUlD YoU pleAsE hElP??...HOw Is fLuOrInE mInEd or proDuCEd? WhErE oN EaRtH iS FlUoRiNe fOuNd? HOw dO hUmAnS UsE fLuOrInE? HoW dOeS FlUoRiNe cOmbIne WiTh oThEr eLeMenTs? WhAt aRe fLuOrIneS pHysIcAl pRoPerTiEs? AnD wHaT aRe sOme IntErEsTiNG oR iMpoRtAnT fAcTs aBoUt fLuOrInE? PlEaSe AnSwEr mE!

i do know whe mixed with hydogen it creats acid also it is in toothepaste

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E-mail address terry - 10/14/2004 7:20:14 PM

what is the cost of flourine their is a cost

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arandomperson - 10/14/2004 1:16:49 AM

  E-mail address tiffany and jessica - 10/12/2004 7:08:15 PM
  we need to know why fluorine is in toothpaste. we have a paper due by friday. PLEASE HURRY!!!!

fluorine's in tooth paste because the compund calciumfluoride(ClF) prevents cavities... its written on nearly every toothpaste tube you know....

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arandomperson - 10/14/2004 1:15:25 AM

  E-mail address Sarah - 10/12/2004 11:25:35 PM
  What is the cost of Fluorine?

there is no cost for fluorine because nobody wants to buy it.

  Reply

E-mail address Sarah - 10/12/2004 11:25:35 PM

What is the cost of Fluorine?

  Reply

E-mail address tiffany and jessica - 10/12/2004 7:10:16 PM

  E-mail address tiffany and jessica - 10/12/2004 7:08:15 PM
  we need to know why fluorine is in toothpaste. we have a paper due by friday. PLEASE HURRY!!!!

do you need to know the price of things containing fluorine, or flourine itself?

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E-mail address tiffany and jessica - 10/12/2004 7:08:15 PM

we need to know why fluorine is in toothpaste. we have a paper due by friday. PLEASE HURRY!!!!

  Reply

E-mail address Shana - 10/12/2004 12:43:04 AM

what is the cost of fluorine? I need to know asap!

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E-mail address jane johns - 10/11/2004 8:18:19 PM

  E-mail address renita - 10/7/2004 12:52:22 AM
  What is the cost of fluorine?
cost= ____ for ____

Did you get the information regarding the cost of fluorine? If so, could you please send to me. Thanks

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E-mail address honeyvan - 10/11/2004 1:50:56 PM

can u plz send me a reaction on how does the flourine affect the body.. tenkzzzz.. reply asap plz.. tenkzzz....

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rick - 10/11/2004 12:47:49 AM

what is fluorines specific gravity/and/or density

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