The size of the species x,x2+ and x4+ decreases as

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x4+>x2+>x

x>x2+>x4+

x4+>x>x2+

x2+>x4+>x

answer is B.

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Detailed Solution

Higher is the positive charge, smaller is the size of the species. Hence, the correct order is x>x2+>x4+.

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