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Question
Identify the correct order of the size of the following :
Ca2+ < K+ < Ar < Cl$-$ < S2$-$
Ar < Ca2+ < K+ < Cl$-$ < S2$-$
Ca2+ < Ar < K+ < Cl$-$ < S2$-$
Ca2+ < K+ < Ar < S2$-$ < Cl$-$

Solution

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