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EEJ MAIN Chemistry QUESTION #7174
Question 1
In the context of the Bohr model of the atom, which of the following statements is true regarding the angular momentum of an electron in a hydrogen-like atom?
  • It is proportional to $\sqrt{n}$
  • It is an integral multiple of $\frac{h}{2\pi}$✔️
  • It is independent of the orbit number
  • It is proportional to $n^{2}$
Correct Answer Explanation
Bohr's second postulate states that the angular momentum ($L$) of an electron orbiting the nucleus is quantized and can only take values that are integral multiples of $\frac{h}{2\pi}$. Mathematically: $mvr = \frac{nh}{2\pi}$, where $n = 1, 2, 3...$