If the speed of an electron in Bohr's first orbit of hydrogen is x, the speed in the nth orbit is:
Correct answer: A. x/n
- A. x/n
- B. n/x
- C. nx
- D. n² x
Explanation
According to Bohr's model, the speed of an electron in an orbit is inversely proportional to the principal quantum number (v ∝ 1/n). Therefore, if the speed in the first orbit (n=1) is x, the speed in the n orbit will be x/n.
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