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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
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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
- A gas decolourised by KMnO₄ solution but gives no precipitate with ammoniacal cuprous
- The pH value of 0.1 M NaOH solution is (when there is a given reaction
- In the formation of [Ni(CN)₄]²⁻, the type of hybridisation involved is
- Hydro-metallurgical process of extraction of metals is based on
- In TeCl₄, the central atom tellurium involves
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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