When the isoelectronic ions, Cl–, S2– and K+ are arranged in order of increasing size, which order is correct? | Periodic Trends

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Question

When the isoelectronic ions, Cl–, S₂– and K⁺ are arranged in order of increasing size, which order is correct?

K⁺, Cl–, S₂–

✓ Correct

K⁺, S₂–, Cl–

S₂–, Cl–, K⁺

Cl–, S₂–, K⁺

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