PolyatomicSet3

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Polyatomic Set #3

permanganate - MnO₄^1-
peroxide - O₂^2-
tartrate - C₄H₄O₆^2-
iodate - IO₃^1-
borate - BO₃^3-
citrate - C₆H₅O₇^3-

The last two polyatomic you need to memorize can be related back to the -ate and -ite. In the list below, the bold are the new polyatomic ions and the not bold are the previous ones you have memorized.

perchlorate - ClO₄^1-
chlorate - ClO₃^1-
chlorite - ClO₂^1-
hypochlorite - ClO₁^1-

If you look at the chemical formula and charge of the polyatomics, the only difference between them are the number of oxygen (the charge remains the same).

per - stem of word - ate { 1 more than -ate (highest number of oxygen) }

stem of word - ate { one higher than -ite (this is one I memorize and link to rest.) }

stem of word - ite { one less than -ate }

hypo - stem of word - ite { one less than -ite (lowest number of oxygen) }