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Question

Chemistry Question on Classical Idea Of Redox Reactions – Oxidation And Reduction Reactions

Choose the correct stability order of group 13 elements in their +1 oxidation state

A

Al < Ga < In < Tl

B

Tl < In < Ga < Al

C

Al < Ga < Tl < In

D

Al < Tl < Ga < In

Answer

Al < Ga < In < Tl

Explanation

Solution

Due to inert pair effect, stability of +3 oxidation state decreases and that of +1 oxidation state increases for (down the group) group 13 elements.
So, the correct order of stability of group 13 elements in their +1 oxidation state is Al < Ga < In < Tl