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CARBON=0

since there are 2 H atoms, +1 for each = +2

1 O atom, -2 for each = -2

So since that already adds up to 0, carbon will have an oxidation number of 0.

hope this helped a little!

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14y ago
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5mo ago

The oxidation number of carbon in H2CO (formaldehyde) is +2. Hydrogen typically has an oxidation number of +1, and oxygen has an oxidation number of -2. By assigning those values to hydrogen and oxygen, the sum of the oxidation numbers in H2CO must be zero, leading to carbon having an oxidation number of +2.

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Q: What is the oxidation number of carbon in H2CO?
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