Question

The stability of +1 oxidation state increases in the sequence .

• A. In < Tl < Ga < Al
• B. Al < Ga < In < Tl
• C. Ga < In < Al < Tl
• D. Tl < In < Ga < Al

Hint:

For Group 13, 14, and 15 elements, the lower oxidation state (Group state - 2) always becomes more stable as you go down the group due to the Inert Pair Effect.

Answer 1

The Correct Option is B