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