JEE Mains · Chemistry · STD 11 -p-Block elements - I
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:
- A Statement \(I\) is incorrect but Statement \(II\) is correct
- B Both Statement \(I\) and Statement \(II\) are correct
- C Both Statement \(I\) and Statement \(II\) are incorrect
- D Statement \(I\) is correct but Statement \(II\) is incorrect
Answer & Solution
Correct Answer
(D) Statement \(I\) is correct but Statement \(II\) is incorrect
Step-by-step Solution
Detailed explanation
Statement \(I\) : Number of \(d\) & f electrons, increases down the group and due to poor shielding of \(d\) & \(f\) \(\mathrm{e}^{-}\), stability of lower oxidation states increases down the group Statement \(II\) : The atomic size of aluminum is greater than that of gallium.
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