In IIIA group, Tl (thalium) shows +1 oxidation state while other members show +3 oxidation state. Why [JEE Orissa 2004]

Large ionic radius of \[Tl\] ion

Presence of lone pair of electron in Tl

In IIIA group, Tl (thalium) shows +1 oxidation state while other membe

1.	In IIIA group, Tl (thalium) shows +1 oxidation state while other members show +3 oxidation state. Why [JEE Orissa 2004]
A.	Presence of lone pair of electron in Tl
B.	Inert pair effect
C.	Large ionic radius of \[Tl\] ion
D.	None of these
Answer» C. Large ionic radius of \[Tl\] ion

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In IIIA group, Tl (thalium) shows +1 oxidation state while other members show +3 oxidation state. Why [JEE Orissa 2004]

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