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Unformatted text preview: halogens, for example): • ClO-• ClO 2-• ClO 3-• ClO 4-Note again, that the number of Oxygens relative to the Chlorine is changing, but that the ionic charge is not. How do we name these? The -ite and -ate suffixes are still used, but we have to add an additional modification to allow us to distinguish between the four forms: • ClO- hypo chlor ite ion • ClO 2- chlor ite ion • ClO 3-chlor ate ion • ClO 4-per chlor ate ion It should be pointed out that some of the naming of ions is historical and is not necessarily systematic. It may be frustrating and confusing, but its all part of chemistry's rich history. Many polyatomic anions that have high (negative) charges can add one or more hydrogen cations (H + ) to form anions of lower effective charge. The naming of these anions reflects whether the H + addition involves one or more hydrogen ions: • HSO 4-hydrogen sulfate ion • H 2 PO 4- di hydrogen phosphate ion...
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