Question

what is oxidation & oxidation number? ​

Answer 1

Answer:

Oxidation is any chemical reaction that involves the moving of electrons. ... When iron reacts with oxygen it forms a chemical called rust because it has been oxidized (the iron has lost some electrons) and the oxygen has been reduced (the oxygen has gained some electrons).

Explanation:

sorry I don't know the oxidation number

Answer 2

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An oxidation number is a number that is assigned to an atom in a substance. Here, the oxidation number of calcium is +2 and the oxidation number of oxygen is -2. If the oxidation number is positive, then this means that the atom loses electrons, and if it is negative, it means the atom gains electrons.