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What is the ratio of the radii of the 3r...

What is the ratio of the radii of the 3rd orbits of `He^(+)` and `Li^(2+)` ?

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To find the ratio of the radii of the 3rd orbits of \( \text{He}^+ \) and \( \text{Li}^{2+} \), we can use the formula for the radius of the nth orbit in a hydrogen-like atom: \[ r_n = r_0 \frac{n^2}{Z} \] where: - \( r_n \) is the radius of the nth orbit, ...
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