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Introduction to p Block Elements

What is the o...

Question

What is the oxidation number of sulfur in H2S?

A

1

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B

2

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C

-2

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D

-1

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Solution

The correct option is A -2
The sum of the oxidation numbers in a compound must equal zero. In the compound hydrogen sulfide, H2S, the two hydrogen atoms have an oxidation number of +1, for a total of +2.
oxidation no of sulfur is -2

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