oxidation state periodic table

Summary. The oxidation state of an atom is equal to the total number of electrons which have been removed from an element (producing a positive oxidation state) or added to an element (producing a negative oxidation state) to reach its present state.

What is oxidation state with example?

For example oxidation state of elemental atoms such as sodium, magnesium, iron is zero. Similarly, the net oxidation state of neutral molecules such as oxygen, chlorine, water, ammonia, methane, potassium permanganate is zero. The oxidation state of atoms in homo-polar molecules is zero.