Questions on Atomic Transitions

  1. What is an atomic transition?
  2. What is the difference between an excitation and a de-excitation in an atomic transition?
  3. How many different processes can cause an atom to undergo a transition?
  4. What is an emission spectrum? 
  5. Are emission spectra the same for different atoms of the same species?  Of different species?
  6. Describe the complete emission spectrum for hydrogen.  How many types of visible photons are emitted?