InterviewSolution
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InterviewSolution
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In which of the following pairs, the ions are isoelectronic ?A. `Na^(+), Mg^^(2+)`B. `Al^(3+), O^(-)`C. `Na^(+), O^(2-)`D. `N^(3), Cl^(-)` |
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Answer» Correct Answer - A::C `Na^(+) = 11 -1 = 10 e^(-), Mg^(2+) = 12 -2 = 10 e^(-)`. Thus, they have same no. of electrons `Al^(3+) = 13 -3 = 10 e^(-), Q^(2-) = 8 + 2 = 10 e^(-)`. They have same no. of electrons `N^(3-) = 7 + 3 = 10 e^(-), Cl^(-) = 17 + 1 = 18 e^(-)`. They do not have same no. of electrons |
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