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Polyatomic Ions

Posted: Thu Oct 04, 2018 12:04 pm
by Nicoline Breytenbach 3D
Should we have all the common polyatomic ions memorized? Or will we be given that information when needed? If we do need it memorized, does anyone have any tricks to remember them more easily?

Re: Polyatomic Ions

Posted: Thu Oct 04, 2018 12:24 pm
by Brian Cook
I think over time we will get use to the most common polyatomic ions. Also if you consider the polyatomic ions that end in -ate as your main ones, different prefixes and suffixes will tell you the different number of oxygen atoms. Per___ate (1 more oxygen) , __ate (most common form), ___ite (1 less oxygen) , hypo___(2 less oxygen). For example, Iodate has 3 oxygen whereas Iodite only has 2. Hope this helps :)