JEE Mains · Physics · STD 12 - 12. atoms
Considering the Bohr model of hydrogen like atoms, the ratio of the ratio of the radius \(5^{\text {th}}\) orbit of the electron in \(\mathrm{Li}^{2+}\) and \(\mathrm{He}^{+}\) is _______.
- A \(\frac{3}{2}\)
- B \(\frac{4}{9}\)
- C \(\frac{9}{4}\)
- D \(\frac{2}{3}\)
Answer & Solution
Correct Answer
(D) \(\frac{2}{3}\)
Step-by-step Solution
Detailed explanation
\(\mathrm{r}=\mathrm{r} \cdot \frac{\mathrm{n}^2}{2}\) for \(\mathrm{Li}^{2+}\) \(r_5=r \cdot \frac{25}{3}\) for \(\mathrm{He}^{+}\)…
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