Fluorine

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Fluorine
!!!
A.K.A.......F
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The Facts

• Under standard conditions, Fluorine is a pale
  yellow gas

• It Is usually found in the earth as the ore
  fluorite

• Fluorites commercial name is fluorspar

• Fluorites chemical name is calcium fluoride
  (CaF2)

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calcium fluoride!
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Extraction
Prior to processing the mineral/ore is
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Crushed

• then screened (separated depending on sediment
  size, to get rid of impurities like gravel or
  different minerals - a bit like sieving)

• the ore is ground very finely (to liberate
  impurities), then fed into a chemical solution
  where the small fluorine grains stick to the
  bubbles/froth.

• This froth overflows and the ore (fairly pure by
  now) is collected from it.

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Hydrofluoric acid is needed to get the elemental
fluorine gas. The acid is made by the following
reaction..
CaF2(s) H2SO4(aq)
2 HF(gas) CaSO4(s) Calcium
Sulphuric acid
Hydrofluoric acid Calcium fluoride
sulphate (Fluorite)
and thats the end of that boring slide that I
couldnt be bothered doing anything interesting
with.
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The water is then seperated from the acid to
make it anhydrous and solid.
This leaves hydrogen fluoride.
I it then melted and electrolysed to produce raw
fluorine gas.
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Electrolysis
WOOOOO!exiting!
Molten hydrogen fluoride is the electrolyte.
(possibly some solvent to lower the temperatures
needed, but you dont need to mention that)
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FLUORINE is the MOST reactive of the Group VII
elements.
Why? i hear you ask!
Fluorine has the highest electro-negativity of
all the elements (its ability to pull other
electrons!!!).
Fluorine is a player!
It has a high electro-negativity because it has
a relatively high Effective nuclear charge (with
9 protons) very little electron shielding and
the outer energy level is very close to the
nucleus.
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Useless facts about Flourine!

• Ordinary substances like wood and rubber burst
  into flame when held into a stream of fluorine

• Melting point53.53
• Boiling point84.95