In iso – electronic species of Mg 2+ , N 3– , Al 3+ , the order of decreasing ionic radii…

Chemistry · JEE Main · NTA Exams — Classification of Elements and Periodicity in Properties

1. N^3– > Mg²⁺ > Al³⁺
2. Mg²⁺ > Al³⁺ > N^3–
3. Al³⁺ > N^3– > Mg²⁺
4. Al³⁺ = Mg²⁺ < N^3–

Answer

(A) N 3– > Mg 2+ > Al 3+

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