In IIIA group , Tl (thallium ) shows +1 oxidation state while other me – InterviewSolution

1.	In IIIA group , Tl (thallium ) shows +1 oxidation state while other members show +3 oxidationstate. Why
Answer» Presence of lone pair of electron in TL Inert pair effect Large ionic RADIUS of Tl ion None of these Solution :Inert pair effect BECOME significant for the `6^(th)` and `7^(th)` PERIOD of p-block element.

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