The ionic radii of K+, Na+, Al3+ and Mg2+ are in the order:

Question

The ionic radii of K⁺, Na⁺, Al³⁺ and Mg²⁺ are in the order:

Na⁺ < K⁺ < Mg²⁺ < Al³⁺

Al³⁺ < Mg²⁺ < K⁺ < Na⁺

Al³⁺ < Mg²⁺ < Na⁺ < K⁺

K⁺ < Al³⁺ < Mg²⁺ < Na⁺

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