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NEETChemistryClassification of Elements and Periodicity in Properties

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 :

Options

  1. ABoth Statement I and Statement II are correct
  2. BStatement I is incorrect but Statement II is correct
  3. CBoth Statement I and Statement II are incorrect
  4. DStatement I is correct but Statement II is incorrect

Correct answer

D. Statement I is correct but Statement II is incorrect

Step-by-step solution

Statement I : Number of d & f electrons, increases down the group and due to poor shielding of d & f e ⁻ , stability of lower oxidation states increases down the group Statement II : The atomic size of aluminium is greater than that of gallium.

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