Taking the Bohr radius as \( a_{0}=53 \mathrm{pm} \), the radius of...

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Taking the Bohr radius as \( a_{0}=53 \mathrm{pm} \), the radius of \( \mathrm{Li}^{++} \)ion in its ground state, on the basis of Bohr's
\( \mathrm{P} \)
model, will be about
W
(1) \( 53 \mathrm{pm} \)
(2) \( 27 \mathrm{pm} \)
(3) \( 18 \mathrm{pm} \)
(4) \( 13 \mathrm{pm} \)
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