Which one of the following statements is correct?

By Megha Chandrashekar
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Which one of the following statements is correct?

Which one of the following statements is correct?

The oxidation number for hydrogen is always zero
The oxidation number for hydrogen is always +1
The oxidation number for hydrogen is always -1
Hydrogen can have more than one oxidation number

Option 4 : Hydrogen can have more than one oxidation number

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Megha Chandrashekar is a former Special Education Assistant who now spends her days running after her toddlers, all the while pursuing a freelance writing career