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The species Ar,K⁺ and Ca²⁺ contain the same number of electrons.In which order do their radii increase
Options
(a) Ca²⁺ < Ar < K⁺
(b) Ca²⁺ < K⁺ < Ar
(c) K⁺ < Ar < Ca²⁺
(d) Ar < K⁺ < Ca²⁺
Correct Answer:
Ca²⁺ < K⁺ < Ar
Explanation:
In isoelectronic species the radius decrease with increase in nuclear charge hence increasing order of radius is Ca⁺² < K⁺< Ar
Related Questions: - At equilibrium, the value of change in Gibb’s free energy (ΔG) is
- The element that does not form a monoxide is
- According to Raoult’s law, the relative lowering of vapour pressure
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Topics: Classification of Elements and Periodicity
(94)
Subject: Chemistry
(2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- At equilibrium, the value of change in Gibb’s free energy (ΔG) is
- The element that does not form a monoxide is
- According to Raoult’s law, the relative lowering of vapour pressure
- If α is dissociation constant, then the total number of moles for the reaction
- Gram molecular volume of oxygen at STP is
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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