Question

Why oxidation state decreases from menganese?

Answer 1

There is a decrease in the number of oxidation states from Mn to Zn. This is because the pairing of d orbital electrons after Mn (Hund's rule)which in turn decreases the number of available unpaired electrons and hence the number of oxidation states. Configuration of Mn=[Ar]3d5 4s2

Answer 2

The oxidation state of an element is related to the number of electrons that an atom loses, gains, or appears to use when joining with another atomic compounds. It also determines the ability of an atom to oxidize (to lose electrons) or to reduce (to gain electrons) other atoms or species. Almost all of the transition metals have multiple potential oxidation states.

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