# Oxyanionic Series and Chemical names [closed]

If there is only 1 Oxyanion in a series, what is it’s prefix/suffix? Also, if I have Copper(I) Iodate, how do I know how many oxygen atoms are in the compound?

## closed as unclear what you're asking by Mithoron, A.K., Jon Custer, Tyberius, user55119Nov 1 '18 at 1:10

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• Also, does a specific amount of oxygen correspond to the prefix/suffix? Example: compound with 1 oxygen= Hypo-X-ite, 2 oxygens= X-ite, 3 oxygens= X-are, and 4 oxygens = Per-X-ate – Jon due Oct 31 '18 at 0:52
• Like this matters, really. On one hand people want some complicated IUPAC names, on the other still use naming from what XIX century? – Mithoron Oct 31 '18 at 1:11
• I agree, but this is also for homework XD – Jon due Oct 31 '18 at 1:12

If there is only 1 oxyanion in a series, what is it’s prefix/suffix?

This anion gets the "-ate" suffix and no prefix. Example: Carbonate $$\ce{CO3^2-}$$. There is no "carbonite" to freeze Han Solo in; the $$\ce{CO2^2-}$$ anion does not exist. Carbon does form other oxyanions, like oxalate, $$\ce{C2O4^2-}$$, but these anions also vary in the number of carbon atoms.

Also, if I have Copper(I) Iodate, how do I know how many oxygen atoms are in the compound?

Iodine can form multiple oxyanions, although hypoiodite and iodite are not particularly stable:

• $$\ce{IO-}$$ - hypoiodite
• $$\ce{IO2^-}$$ - iodite
• $$\ce{IO3^-}$$ - iodate
• $$\ce{IO4^-}$$ - metaperiodate
• $$\ce{IO6^5-}$$ - orthoperiodate

With the exception of the "meta" and "ortho" periodates, this same trend is seen for two other halogens, chlorine and bromine (chlorine shown):

• $$\ce{ClO-}$$ - hypochlorite
• $$\ce{ClO2^-}$$ - chlorite
• $$\ce{ClO3^-}$$ - chlorate
• $$\ce{ClO4^-}$$ - perchlorate
• Thank you, but let’s say I didn’t know Iodine could form multiple oxyanions, how would I know how many oxygen atoms are in Iodate? – Jon due Oct 31 '18 at 10:26
• And vice versa. If I have BaIO4, how do I know it’s name if I don’t have the other oxyanions with iodine? – Jon due Oct 31 '18 at 11:27
• @Jondue - You have two choices: Look it up or memorize it. – Ben Norris Oct 31 '18 at 11:52