The time taken for one revolution in the n th orbit of hydrogen atom at radius r is:

Chemistry · NEET · NTA Exams — Structure of Atom

1. \(\frac{n^{2} h^{2}}{8 \pi r^{2}}\)
2. \(\frac{4 \pi^{2} m r^{2}}{n h}\)
3. \(\frac{2 \pi r}{\pi h}\)
4. \(\frac{n^{2} n^{2}}{2 \pi^{2} m}\)

Answer

(B) 4 ^ 2 m r^ 2 n h

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