Periodic acid
Periodic acid is HIO4 or H5IO6. The name is not derived from "period", but from "iodine".
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In dilute solution, periodic acid exists as H+ and IO4-.When more concentrated, orthoperiodic acid, H5IO6, is formed. This can be obtained crystalline.Orthoperiodic acid can be dehydrated to metaperiodic acid, HIO4. Further heating gives diiodine pentoxide and oxygen; apparently the anhydride 'diiodine heptoxide' doesn't exist.
Related Topics:
Diiodine pentoxide - Oxygen - Anhydride
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