Electron in a hydrogen atom is replaced by an identically charged p...

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Electron in a hydrogen atom is replaced by an identically charged particle muon with mass 207 times that of electron. Now the radius of \( \mathrm{K} \) shell will be
\( \mathrm{P} \)
(A) \( 2.56 \times 10^{-3} \AA \)
(B) \( 109.7 \AA \)
(C) \( 1.21 \times 10^{-3} \AA \)
(D) \( 22174.4 \AA \)
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