What is Reduction?

Reduction is the gain of an electron in a molecule.

When an atom or ion is reduced the oxidation number decreases.

 

Cl2+2e-→2Cl-

Oxidation Number: 0          -1This is an example of an element being Reduced.

This shows that the Chlorine (Cl) element has gained 2 electrons and its oxidation state has decreased.

 

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