How do you determine the charge of polyatomic ions without finding out experimentally?

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How do you determine the charge of polyatomic ions without finding out experimentally?

I know its a stupid question but sometimes you forget things and need a quick reveiw.

2007-07-25 05:27:46 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry

3 answers

Polyatomic ions are usually paired with an atom that already has a specific charge like Ca, where you know it is +2 if there is only one Ca atom then the charge of the polyatomic ion is alos +2, if there is 2 Ca atoms then the charge is +4 and so on.

2007-07-25 05:37:24 · answer #1 · answered by laurabeth_4 2 · 0⤊ 0⤋

Assign charges to ions and parts that they typically have. Like +1 to alkali metals.

2007-07-25 05:34:36 · answer #2 · answered by ag_iitkgp 7 · 0⤊ 0⤋

http://antoine.frostburg.edu/chem/senese/101/compounds/polyatomic.shtml
That is a General Chemistry site. Maybe that will help you

2007-07-25 05:32:05 · answer #3 · answered by cRiMiNgEr 2 · 1⤊ 0⤋