Question

what is difference between oxidation number and oxidation state??​

Answer 1

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The difference between the oxidation number and oxidation state is that the oxidation state defines the degree of oxidation of an atom in a molecule, whereas the oxidation number is defined as the charge that the central metal atom will retain even after all the ligands have been removed from the atom.

Answer 2

Oxidation state and oxidation number are quantities that commonly equal the same value for atoms in a molecule and are often used interchangeably. Most of the time, it doesn't matter if the term oxidation state or oxidation number is used.

There is a slight difference between the two terms.

Oxidation state refers to the degree of oxidation of an atom in a molecule. In other words, the oxidation state is the charge of an atom if all bonds it formed were ionic bonds. Each atom of the molecule will have a distinct oxidation state for that molecule where the sum of all the oxidation states will equal the overall electrical charge of the molecule or ion. Each atom is assigned an oxidation state value based on predetermined rules based on electronegativity and periodic table groups.

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