Verified Solution • 2025–26 Session moderate

QJEEM22Ch4719: JEE Main 2022 Chemistry - Class 12 JEEM22Ch4719 Solution: Choose the correct stability order of group 13 elements in…

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

Multiple Choice Options

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

Step-by-Step Verified 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.

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