JEE Main 2024 Chemistry question
Given below are two statements: Statement I: In group 13, the stability of +1 oxidation state increases down the group. Statement II: The atomic size of gallium is greater than that of aluminium. In the light of the above statements, choose the most appropriate answer from the options given below:
Answer: (D)
Solution
The inert pair effect makes +1 more stable down the group. Ga (135 pm) is slightly smaller than Al (143 pm) because of poor d-shielding.