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Which of the following statement(s) is/are correct?
(i) The atomic and ionic radii of alkaline earth metals are smaller than those of the corresponding alkali metals in the same periods.
(ii) Second ionisation enthalpies of the alkaline earth metals are smaller than those of the corresponding alkali metals.
(iii) Compounds of alkaline earth metals are more extensively hydrated than those of alkali metals
  • a)
    (i) and (ii)
  • b)
    (ii) and (iii)
  • c)
    (i) and (iii)
  • d)
    (i), (ii) and (iii)
Correct answer is option 'D'. Can you explain this answer?
Most Upvoted Answer
Which of the following statement(s) is/are correct?(i) The atomic and...
Statement (i): Atomic and Ionic Radii
- The atomic and ionic radii of alkaline earth metals (AEM) are indeed smaller than those of the corresponding alkali metals (AM) in the same periods.
- This is due to the increased nuclear charge in AEM, resulting in a stronger attraction between the nucleus and the outer electrons, thus pulling them closer.
Statement (ii): Second Ionisation Enthalpies
- The second ionisation enthalpies of alkaline earth metals are higher than those of alkali metals.
- This is because AEM have a more stable electronic configuration after losing one electron (noble gas configuration), making it harder to remove the second electron compared to AM.
Statement (iii): Hydration of Compounds
- Compounds of alkaline earth metals are indeed more extensively hydrated than those of alkali metals.
- The higher charge density of AEM cations leads to stronger interactions with water molecules, resulting in greater hydration.
Conclusion
- Therefore, the correct statements are (i) and (iii), while (ii) is incorrect.
- The correct option is (c): (i) and (iii).
In summary, the answer is misrepresented in the original question. While statements (i) and (iii) are correct, statement (ii) is incorrect. Thus, the final answer should reflect (i) and (iii) only.
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Which of the following statement(s) is/are correct?(i) The atomic and...
All the given statements are correct.
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Which of the following statement(s) is/are correct?(i) The atomic and ionic radii of alkaline earth metals are smaller than those of the corresponding alkali metals in the same periods.(ii) Second ionisation enthalpies of the alkaline earth metals are smaller than those of the corresponding alkali metals.(iii) Compounds of alkaline earth metals are more extensively hydrated than those of alkali metalsa)(i) and (ii)b)(ii) and (iii)c)(i) and (iii)d)(i), (ii) and (iii)Correct answer is option 'D'. Can you explain this answer?
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Which of the following statement(s) is/are correct?(i) The atomic and ionic radii of alkaline earth metals are smaller than those of the corresponding alkali metals in the same periods.(ii) Second ionisation enthalpies of the alkaline earth metals are smaller than those of the corresponding alkali metals.(iii) Compounds of alkaline earth metals are more extensively hydrated than those of alkali metalsa)(i) and (ii)b)(ii) and (iii)c)(i) and (iii)d)(i), (ii) and (iii)Correct answer is option 'D'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Which of the following statement(s) is/are correct?(i) The atomic and ionic radii of alkaline earth metals are smaller than those of the corresponding alkali metals in the same periods.(ii) Second ionisation enthalpies of the alkaline earth metals are smaller than those of the corresponding alkali metals.(iii) Compounds of alkaline earth metals are more extensively hydrated than those of alkali metalsa)(i) and (ii)b)(ii) and (iii)c)(i) and (iii)d)(i), (ii) and (iii)Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following statement(s) is/are correct?(i) The atomic and ionic radii of alkaline earth metals are smaller than those of the corresponding alkali metals in the same periods.(ii) Second ionisation enthalpies of the alkaline earth metals are smaller than those of the corresponding alkali metals.(iii) Compounds of alkaline earth metals are more extensively hydrated than those of alkali metalsa)(i) and (ii)b)(ii) and (iii)c)(i) and (iii)d)(i), (ii) and (iii)Correct answer is option 'D'. Can you explain this answer?.
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