Polyatomic ions

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Matthew Leung 1B
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Joined: Fri Jun 23, 2017 11:39 am

Polyatomic ions

Postby Matthew Leung 1B » Mon Jul 31, 2017 3:58 pm

Does anyone know if there is any way to find the charge of polyatomic ions other than memorization? Is there a lost of polyatomic ions that we should know specifically for this class?
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Chem_Mod
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Re: Polyatomic ions

Postby Chem_Mod » Mon Jul 31, 2017 7:13 pm

Yes. See the lists in my lecture notes.

You can also work them out.
For example, H2SO4 releases 2 H+ then the anion must be 2- to give SO42-.

Whereas, HCl releases 1 H+ then the anion must be 1- to give Cl-.
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