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Which of the following sets contain only isoelectronic ions?

(i) Zn^{2+}, Ca^{2+}, Ga^{3+}, Al^{3+}
(ii) K^{+}, Ca^{2+}, Sc^{3+}, Cl^{-}
(iii) P^{-3}, S^{2-}, Cl^{-}, K^{+}
(iv) Ti^{4+}, Ar, Cr^{3+}, V^{5+}


Answers (1)

The answer is the option (ii) and (iii)

Explanation: Isoelectronic species are those species which because have the same number of electrons.

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