The stability of ‘+1’ oxidation state increases in the sequence
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a
Tl
b
In
c
Ga
d
Al
answer is D.
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Detailed Solution
The common oxidation states of 13th group are +3 and +1The stability of ‘+1’ oxidation state increases from Aluminium to thallium and the stability of +3 oxidation state decreases from aluminium to thallium Relative stabilityB3+>Al3+>Ga3+>In3+>Tl3+B+