Which one of the following represents collection of isoelectronic species? (At. numbers…

Chemistry · JEE Main · NTA Exams — Atomic Structure

1. Na⁺, Ca²⁺, Mg²⁺
2. N^3-, F^-, Na⁺
3. Be, Al³⁺, Cl^-
4. Ca²⁺, Cs⁺, Br

Answer

(B) N 3 - , F - , Na +

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