9. Quantum Mechanics

Which statement about the quantum mechanical solution for the hydrogen atom is correct?

In the context of quantum mechanics, how is the term 'photon' related to the term 'quantum'?

Which of the following best describes the primary use of a spectroscope in quantum mechanics?

Which of the following statements is true regarding the allowed energies of a quantum system with energy levels at 1.0 eV, 2.0 eV, 4.0 eV, and 7.0 eV?

In the context of quantum mechanics, what does it mean when we say that energy is quantized?