You know what it looks like… but what is it called?
TAKE THE QUIZ“hypoiodous”
We have one entry that includes the term hypoiodous.
hypoiodous acid
noun: a very unstable very weak acid HIO that resembles hypochlorous acid and is obtained in solution by treating mercury oxide (see mercury oxide sense b) with iodine in water or in the form of unstable salts in solution by reaction of iodine with alkali
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Merriam-Webster unabridged