What is the oxidation number of S in H2SO3?

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1 Answer
Shulgin
Apr 16, 2018

#+4#

Explanation:

We start of by giving the oxidation number for hydrogen and oxygen, since we know these already.
So we have 2 hydrogen which each has a charge of #+1#, and we have 3 oxygen which each has a charge of #-2#. If we cancel these out we would have that sulfur should have a charge of #+4# to give a total charge of #0#.

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