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Based on EM+3/M0 value, the best oxidant is

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a
Ga+3
b
Al+3
c
In+3
d
Tl+3

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detailed solution

Correct option is D

Atomic radius….BTl>Ga>Al>In;MP…B>Al>Tl>In>Ga;Boron has gaint polymeric structure,Gallium exists as Ga2 molecule(M.P = 302 K)BP….B>Al>Ga>In>Tl:Difference in B.P and M.P in Gallium is about 2300 K. It has wide liquid range.It is athermometric liquid.Density…BTl>In>Ga>Al;a) EM3+Mo is most -ve for Al and +ve for Tl;Al is the best reductant and Tl3+ is the best oxidantb) EM+/M0 is positive only for Al;Al+ is the best oxidant;

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