The finding that electrons in an atom occupy a volume much ...

[abern]

The finding that electrons in an atom occupy a volume much greater than the volume of the nucleus is best explained by
 
  A) electromagnetic forces.
  B) angular momentum conservation.
  C) relative sizes of electrons and nuclei.
  D) the wave nature of the electron.
  E) none of the above

Question 2

The discreteness of orbits of electrons in an atom are due to
 
  A) wave interference.
  B) momentum conservation.
  C) electric charge quanta
  D) all the above
  E) none of the above

[bbburns21]

Answer to Question 1

Answer: D

Answer to Question 2

Answer: A