In which list are the ions ranked in order of increasing ionic radius? | Atomic Structure

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Question

In which list are the ions ranked in order of increasing ionic radius?

K⁺ < Rb⁺ < Ca²⁺ < Sr²⁺

K⁺ < Ca²⁺ < Rb⁺ < Sr²⁺

Ca²⁺ < Sr²⁺ < K⁺ < Rb⁺

✓ Correct

Ca²⁺ < K⁺ < Sr²⁺ < Rb⁺

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