Answer to Question #120601 in Atomic and Nuclear Physics for ethan

Question

verify my answer please
1. A solar cell, which makes up solar panels, creates electricity by means of the photoelectric effect. If a solar cell only produces a current when one of these colors of light is used then the color that works is
A. green
B. orange
C. red
D. blue
E. yellow
=> D?
2. What causes the dark lines in the absorption spectrum of an element to occur ?
A. Photons are absorbed when electrons jump from a higher-energy to a lower-energy state.
B. Photons are emitted when electrons jump from a higher-energy to a lower-energy state.
C. Photons are absorbed when electrons jump from a lower-energy to a higher-energy state.
D. Photons are emitted when electrons jump from a lower-energy to a higher-energy state.
=>C?
3. The atomic model Bohr developed was revolutionary in that
A. the electrons traveled around the nucleus in circles
B. the was a nucleus with electrons outside the nucleus
C. the electrons had a wavelength
D. the electrons had only certain allowed energies
=>A?

Answer 1

1. Correct.
2. Correct.
3. Incorrect; the oddest thing in Bohr's theory was that the electrons had only certain allowed energies (orbitals); Bohr claimed that they cannot move between these allowable states.