An oxidation number is a number that is assigned to an atom in a substance. The oxidation number could be positive, negative, or zero, and it indicates if electrons are lost or gained. In other words, the oxidation number is a number that helps us keep track of electrons in an atom.
Natalie must complete a large amount of filing this afternoon but agrees to fill in at the front desk for the rest of the afternoon. She demonstrates her <u>Flexibility.</u>