MediumChemistry
+4 / -1
Oxidation number of an element in its free state is;
A
positive
B
zero
C
negative
D
fractional
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The number of electrons lost or gained during the change, Fe + H2O → Fe3O4 + H2
NextIn the reaction, H2S + H2O2 → S + 2H2O; (A) S is the oxidant. (B) H2O is the red
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