aluminium because its an alkali earh metal and
fluorine is a halogen
2006-06-07 06:28:33
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answer #1
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answered by Anonymous
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Depends what reaction you're talking about, and what state they're in to begin with. Aluminum Al is unstable, and is a very strong electron donor(but is passivised by oxygen, see later). Fluorine is the opposite - F2 would be inclined to receive 2 electrons to become 2F-, but a diatomic molecule make is more stable, in general.
The difference in reduction potential isn't a good indicator - itjust means one gives electrons very easily, and the other "grabs" them very easily" - those are different categories.
Fluorine was isolatede in it's pure state in 1886 - One reason it took so long to isolate flourine in the first place is because it's very toxic(meaning reactive), and got a lot of chemists sick or dead until they finally got the procedure right. The guy who finally managed to get it right, and not die, was Henri Moissan, 74 years after people guessed it exists. He got a Nobel prize for it.
Aluminum was isolated in 1827 so in that sense, you could say that flourine is more reactive - it's harder to synthesize in it's uncharged state. On the other hand, Aluminium extraction is still more difficult, because it's an excellent reducer, from that point of view, Al is more reactive. The first commercial method to extract aluminium, however, was also discovered in 1886, (Hall-Heroult process, they didn't get the Nobel prize, but they did make a lot of money out of it, I think) and is still the most widely used process to this day, even though it requires an investment of a lot of energy. until that time, it was so difficult to extract it, that it was considered more precious than gold(!).
Overall, I'd say Aluminium is more reactive, because it's a lot more difficult to extract. The reason it doesn't seem to be as reactive as fluorine is because the surface is covered with oxygen ions that stabilize it, and it's very hard to avoid that, so usually you won't see it do things fluorine would do - considering this, you could say fluorine is more reactive, I guess it's a matter of perspective.
If you have a tooth filling(usually made of silver) and you've ever bitten (by accident ) and aluminium made sandwich/candy/chocholate wrapping with it, you probably won't forget the feeling for the rest of you life - that's because the Aluminium "gives" it's electrons to the silver in your tooth, which gives you an electric shock.
Flourine F2, or it's acid, HF, still scares me - contact with one of these can make you blind or dead.
Hope this helps. Anyway, it was fun to learn of the history a little :)
2006-06-07 06:23:09
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answer #2
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answered by asaaiki 3
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Its hard to say without specific conditions being said, but my way of looking at is that if you were to put poisonous F2 gas in the air, it would kill people and eventually dissipate. However, throwing a handful (or shovelful) of finely divided aluminum powder in a room (that was ground down without oxygen or water present) would produce a very big violent burning flame. Fluorine is actually less reactive to ambient conditions because the F2 bond is quite strong and there is a bit of a barrier to get things opened up compared to the reaction of aluminum with oxygen or water.
It depends on the reaction, though, because reaction of fluroine or aluminum to cesium metal would be the exact opposite with aluminum having no real reaction and Cesium fluoride being one of the most exothermic reactions in the periodic table (check the electronegativity differences). I have seen a Cs/F explosion demonstrated and about 10mg of each could have blown up a house. Hope this helps.
2006-06-07 06:54:10
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answer #3
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answered by Robert L. D 2
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Fluorine is more electronegative, that is,its tendency to gain an electron and become the fluoride ion(F-1) is more than aluminium.Aluminium,on the other hand,loses three electrons and becomes the aluminide ion,(Al+3).And also,when it gets oxidised to its oxide,it forms a protective layer on the surface made of aluminium oxide.This prevents further oxidation.Hence it is one of the stablest metals known.
2006-06-07 06:29:24
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answer #4
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answered by Anonymous
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Al is earth alkaline metal and has tendency to give 3 electron or it is eletropostive .
but F has 7 electron in valence shell it need 1 electron to get octave configuration and it is more eletro negative so it can react fast
for example
Al+3Hcl=AlCl3+3H after heating only hydrogen come out
but
fluorine react readily.
thank q
2006-06-07 06:39:47
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answer #5
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answered by rohit m 1
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No, because flourine has 7 electrons in it's outer shell, and aluminum has only 3--the more electrons in the outer shell, the less reactive
2006-06-07 10:02:04
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answer #6
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answered by atbacher 1
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Yes.
2006-06-07 06:24:29
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answer #7
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answered by jncanman99 2
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You are comparing between two different elements, any one has its properties, and goes different reactions depending on that properties.
2006-06-07 07:03:01
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answer #8
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answered by basimsaleh 4
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Yes, compare their reduction potentials.
2006-06-07 06:28:41
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answer #9
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answered by ag_iitkgp 7
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yes it is
2006-06-07 06:41:10
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answer #10
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answered by cranberries 4
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