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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
- Which of the following is used as ”anasthesia”
- The oxidation number of oxygen in O₂PtF₆ is
- Assuming fully decomposed, the volume of CO₂ released at STP on heating 9.85g
- A solution with pH = 2 is more acidic then one with a pH = 6 , by a factor
- Among the following, identify the compound which cannot act as both oxidising
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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