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<center><b>Polyatomic Set #3</b></center><br> <br> <br> permanganate - <nowiki>MnO</nowiki><sub>4</sub><sup>1-</sup><br> peroxide - O<sub>2</sub><sup>2-</sup><br> tartrate - C<sub>4</sub>H<sub>4</sub>O<sub>6</sub><sup>2-</sup><br> iodate - <nowiki>IO</nowiki><sub>3</sub><sup>1-</sup><br> borate - <nowiki>BO</nowiki><sub>3</sub><sup>3-</sup><br> citrate - C<sub>6</sub>H<sub>5</sub>O<sub>7</sub><sup>3-</sup><br> <br> <br> 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.<br> <b>perchlorate - <nowiki>ClO</nowiki><sub>4</sub><sup>1-</sup></b><br> chlorate - <nowiki>ClO</nowiki><sub>3</sub><sup>1-</sup><br> chlorite - <nowiki>ClO</nowiki><sub>2</sub><sup>1-</sup><br> <b>hypochlorite - <nowiki>ClO</nowiki><sub>1</sub><sup>1-</sup></b><br> <br> 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).<br> <br> <b>per</b> - stem of word - <b>ate</b> { 1 more than -ate (highest number of oxygen) }<br> stem of word - <b>ate</b> { one higher than -ite (this is one I memorize and link to rest.) }<br> stem of word - <b>ite</b> { one less than -ate }<br> <b>hypo</b> - stem of word - <b>ite</b> { one less than -ite (lowest number of oxygen) }<br>
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