text: A) Electron\n\nElectrons have a negative charge. If an electron is transferred to an atom...that atom is reduced. Ex..Fe 3+ (Iron) plus 1 electron = Fe 2+... the charge was REDUCED from 3 to 2.\nOxidation is just the opposite. When an electron is taken from an atom, the charge increases. Ex... NA (Sodium) metal With a 0 charge loses an electron, it is oxidized to Na 1+