InterviewSolution
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InterviewSolution
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The species Ar, `K^(+) and Ca^(2+)` contain the same number of electrons. In which order do their radii increase ?A. `Ca^(2+) lt K^(+) lt Ar`B. `K^(+) lt Ar lt Ca^(2+)`C. `Ar lt K^(+) lt Ca^(2+)`D. `Ca^(2+) lt Ar lt K^(+)` |
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Answer» Correct Answer - A They are isoelectronic species but their nuclear charges are Ca = 20, K = 19, Ar = 18. Greater the nuclear charge of the isoelectronic species, greater is the pull on the electrons and smaller is the size |
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