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color of a precipitate
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Topic: color of a precipitate (Read 1880 times)
antonio
Labrat
Posts: 23
color of a precipitate
«
on:
January 09, 2009, 11:48:51 AM »
is there any rule in order to know how will be the color of a precipitate?
i really want to know it, if there's one
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kyle1990
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Posts: 805
Re: color of a precipitate
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Reply #1 on:
January 11, 2009, 01:02:33 AM »
There's not really a rule, but the general statement is this: Compounds that have elements containing transition metals will be colored (such as iron, copper, chromium, etc...). This is because of the splitting of the d orbitals (some have lower energies than others, causing the electrons to jump around). This is very general, but it's a good rule of thumb. Zinc is one of the exceptions since all it's d orbitals are filled. If you want to know more, look into the crystal field theory.
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