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Topic: polyatomic atom formula  (Read 2373 times)

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dsullivan16

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polyatomic atom formula
« on: June 16, 2007, 05:12:38 PM »
 ??? where do the numbers in a polyatomic formula come from?
Ex: Ammonium ion NH 4 +
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Re: polyatomic atom formula
« Reply #1 on: June 16, 2007, 06:03:02 PM »
Do you mean "How do we know them?" Google elemental analysis.
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