Question

Which of the following sequence is correct here?

• A. $Tl < ln < Ga < Al$ (stability of +1 oxidation state)
• B. $CO_{2} < SiO_{2} < SnO_{2} < PbO_{2}$ (increasing oxidising power)
• C. $BF_{3} < BCl_{3} < BBr_{3} < Bl_{3}$ (the lewis acid strength)
• D. Both B and C

Answer 1

Answer: (D)

Here both B and C are correct but A is incorrect as the correct order is
$Al < Ga < ln < Tl$ (stability of +1 oxidation state)
As due to inert pair effect stability in lower oxidation state increases down the group.