What is the oxidation number of the unde...

What is the oxidation number of the underlined elements?
a. `H_(2)underline(S)` , b. `H_(2)underline(S)O_(4)` c. `Naunderline(S_(2))O`

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The correct Answer is:

A

a. `-2` , b. `+6`, c. `+2`, d. `+2.5` , e. `+2`, f. `+6` , g. `+6`, h. `+6`, i. `-3,`and `+5`, j. `2` , `k. `2` , l. 5`

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