InterviewSolution
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InterviewSolution
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Which of the following isoelectronic ions has the lowest ionization energy?A. `K^+`B. `Ca^(2+)`C. `Cl^-`D. `S^(2-)` |
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Answer» Correct Answer - D Nuclear charge on `K^(+),Ca^(2+),Cl^(-) and S^(2-)` are 19,20,17 and 16 respectively. Lesser the nuclear charge, lesser is the ionisation energy.Thus ionisation energy of `S^(2-)` is least. |
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