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Identify the correct order of the size of the following elements: Ca, K, Ar,Cl,S
Options
(a) Ca²⁺< K⁺< Ar < Cl⁻ < S²⁻
(b) Ar < Ca²⁺< K⁺< Cl⁻< S²⁻
(c) Ca²⁺< Ar < K⁺< Cl⁻ < S²–
(d) Ca²⁺< K⁺< Ar < S²⁻ < Cl⁻
Correct Answer:
Ca²⁺< K⁺< Ar < Cl⁻ < S²⁻
Explanation:
For isoelectronic species, size of anionincreases as negative charge increaseswhereas size of cation decreases withincrease in positive charge. Further ionic radiiof anions is more than that of cations
Related Questions: - ‘Metals are usually not found as nitrates in their ores”. Out of the following two
- Nitrogen in an organic compound can be estimate by
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Question Type: Memory
(964)
Difficulty Level: Easy
(1008)
Topics: Classification of Elements and Periodicity
(94)
Subject: Chemistry
(2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- ‘Metals are usually not found as nitrates in their ores”. Out of the following two
- Nitrogen in an organic compound can be estimate by
- If 30 mL of H₂ and 20 mL of O₂ reacts to form water. what is left at the end
- In methane four C-H bonds are directed towards the corners of
- Clemmensen reduction of a keton is carried out in the presence of
Question Type: Memory (964)
Difficulty Level: Easy (1008)
Topics: Classification of Elements and Periodicity (94)
Subject: Chemistry (2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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