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Question

The decreasing order of the size of H−, O−, F−, Cl− is:

A
H<O<F<Cl
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B
H>F>O>Cl
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C
H>O>Cl>F
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D
Cl>F>O>H
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Solution

The correct option is C H>O>Cl>F
Size of H is very much larger than Cl or o due to very less Zeff in H, it's outer electron are free to maximize the radii.

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