The speed of electron revolving round H-nucleus is m/s. The distance of electron from nucleus is — Atomic Structure Chemistry Question

💡 Solution & Explanation

Speed $v = \frac{2.18 \times 10^6}{n} \implies 0.547 \times 10^6 = \frac{2.18 \times 10^6}{n} \implies n \approx 4$. Distance $r = 0.529 \times n^2 = 0.529 \times 16 = 8.464$ Å. Therefore, correct answer is C.