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when a substance can not be chemically reduced
Reduction is equivalent to a gain of electrons.
Which element will be oxidized and which will be reduced
Atomic number = Number of protons
The element forming at the cathode will depend on what elements are present. Reduction takes place at the cathode, so whatever element is being reduced, that is the one that will be produced at the cathode.
it has more electrons in the product than in the reactant
Oxidation involve loss of electrons and reduction involve gain of electrons.
This element is fluorine.
The element has gained one or more electrons....
The element has gained one or more electrons....
OXYGEN
Cu2+
The corrosion on iron can be reduced by suitable thin layer of element to be electroplated.
when a substance can not be chemically reduced
Gold
No it is not. However, it is easily oxidised.
disproportionation