Chemistry · p-Block (I) (Grp. 13, 14)
JEE Main 2024 — 5 April, Shift 1 — Question 64
Given below are two statements, one is labelled as Statement I and the other is labelled as Statement II.
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:
- Option A:
Statement I is incorrect but Statement II is correct
- Option B:
Both Statement I and Statement II are correct
- Option C:
Both Statement I and Statement II are incorrect
- Option D:Correct
Statement I is correct but Statement II is incorrect
Answer: D
Step-by-step solution
Statement I is Correct: In Group 13, the stability of the oxidation state increases down the group due to the inert pair effect.
Statement II is Incorrect: Because of poor shielding by -electrons, gallium has a smaller atomic size than aluminium, not larger.
Thus, Statement I is correct but Statement II is incorrect (Option D).
Answer key and solution verified before publishing.
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- Exam
- JEE Main 2024
- Paper
- 5 April, Shift 1
- Subject
- Chemistry
- Chapter
- p-Block (I) (Grp. 13, 14)
- Topic
- Introduction & Properties of Group 13: Boron Family