1.

Explainwhyoxidationstatesof transitionelementsincreases firstfrom Sc to Mn andthendecrease ?

Answer»

SOLUTION :(i) Theuse of3d electronfor formation ofbondincreasesfrom SC to Mn causingthe INCREASESIN oxidationstateupto +7 .
(ii) Thereasonfor Mnhavinghighestoxidationstateof +7is due tothe presenceof 7 unpairedelectronsin itsatom.
(III)As thenumberof unpairedelectrons decreasesfrom Feto CU .sothere is thedecrease in oxidation state.


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