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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
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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
- When 1 mol of gas is heated at constant volume,temperature is raised
- At 25⁰C the pH value of a solution is 6, then the solution is
- Gas A is bubbled through slacked lime, a white precipitate is formed.
- Nitrogen is obtained by the thermal decomposition of
- Borax is used as a cleansing agent because on dissolving in water it gives
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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