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Identify the correct order of the size of the following elements:

Identify the correct order of the size of the following elements: Ca, K, Ar,Cl,S

Options

(a) Ca²⁺ (b) Ar (c) Ca²⁺ (d) Ca²⁺

Correct Answer:

Ca²⁺Explanation:

For isoelectronic species, size of anionincreases as negative charge increaseswhereas size of cation decreases withincrease in positive charge. Further ionic radiiof anions is more than that of cations

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