Question

The angular momentum of an electron in Bohr’s hydrogen atom whose energy is -3.4 eV is

• A. \( \frac{h}{2\pi} \)
• B. \( \frac{h}{\pi} \)
• C. \( \frac{h}{2} \)
• D. \( \frac{h}{\pi} \)

Hint:

In Bohr’s model, the angular momentum of an electron is quantized and is integral multiples of \( \frac{h}{2\pi} \).

Answer 1

The Correct Option is A

For the electron in Bohr’s model, the angular momentum is quantized and given by \( mvr = \frac{nh}{2\pi} \), where \( n = 1 \) for the ground state. The angular momentum for a -3.4 eV energy corresponds to \( \frac{h}{2\pi} \).