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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: - In which of the following pairs, both the species are not isostructural ?
- The predominant intermolecular forces in HF is due to
- The preparation of ethene from ethanol can be described as
- A 20 mass percent H₂SO₄ solution has density 1.15 g mL⁻¹.Molarity
- A mixture of gases contains H₂ and O₂ gases in the ratio of 1:4(w/w).
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
- In which of the following pairs, both the species are not isostructural ?
- The predominant intermolecular forces in HF is due to
- The preparation of ethene from ethanol can be described as
- A 20 mass percent H₂SO₄ solution has density 1.15 g mL⁻¹.Molarity
- A mixture of gases contains H₂ and O₂ gases in the ratio of 1:4(w/w).
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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