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Solution: Determine the oxidation number for the indicated element in ...

Question

Determine the oxidation number for the indicated element in each of the following substances: (d) Br in HBrO

Video Transcript

So here we have to figure out the oxidation number in hypobromous acid. Now we know that when hydrogen is connected to non metals, its oxidation number will be +1. When it's connected to metals though or boron, its -1. Oxygen here, we're looking for bromine so this will be X, oxygen here it's not a peroxide or a superoxide so it's going to be -2.

All we've got to do now is solve for the missing variable. So we're going to have one +X plus 1 oxygen which is -2 equals the charge of my molecule which has no charge so it's equal to zero. 1 plus X minus 2 equals zero, X minus 1 equals zero. So the oxidation number here of bromine would have to be +1.