試題詳解

Problem 14
Which of the following statements are correct regarding Bohr's theory, the Franck-Hertz experiment, and Rutherford's atomic model?
(A) In the Franck-Hertz experiment, the accelerating voltage exhibits sudden drops at multiples of 4.9 volts. The energy levels of 4.9 volts and 9.8 volts correspond to transitions to the ground state and the first excited state of mercury atoms, respectively.
(B) In Bohr's theory, energy is assumed to be quantized, meaning that the quantum state of a hydrogen atom can only occupy specific, discrete energy levels.
(C) Rutherford's atomic model is inconsistent with Maxwell's equations, as accelerating charged particles, such as orbiting electrons, would radiate electromagnetic waves. Consequently, electrons would lose energy and spiral into the atomic nucleus.
(D)In Bohr's theory, the relativistic effects on the electron can be negligible.
(E) According to Bohr's model, the ratio of the electron's speed in the second excited state to its speed in the fifth excited state is exactly 2.