The stability of +1oxidation state among Al, Ga In and Tl increases in

1.	The stability of +1oxidation state among Al, Ga In and Tl increases in the sequence.
Answer» `AL lt Ga lt In lt Tl` `Tl lt In lt Ga lt Al` `In lt Tl lt Ga lt Al` `Ga lt In lt Al lt Tl` Solution :As we MOVE downthe groupfrom Al toTl, inertpair effectbecomesmore and PRONOUNCED. In otherwords,STABILITY of +1 oxidationstateincreasesdown the GROUP , i.e., `Al ltGa lt In lt Tl`.

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