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Calculate the radii of 2nd Bohr orbit of...

Calculate the radii of 2nd Bohr orbit of`Li^(2+)`

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Radii `(r_(n))=( 52.9(n^2))/(Z ) p m`
` Z of Li^(2+)=3`
` r_(2) = (52.9xx (2)^(2))/(3) p m`
` r_(2) = 70.53 `pm
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