please answer both thank you!! Question 4 Not yet answered Marked out of 1 One result of the discovery of cathode ray particles was that the theory of the atom was revised to state that Select one: O a. an atom is an indivisible sphere O b.electrons exist in probability clouds Flag question c, an atom is mostly made up of empty space O d. an atom contains negatively-charged particles Question 5 For which of the following explanations did the diffraction of high-speed electrons provide experimental support? Not yet answered Marked out of 1 Select one: Flag question O a. Bohr\'s explanation of line spectra O b. Compton\'s explanation of the Compton effect O c. Einstein\'s explanation of the photoelectric effect O d. De Broglie\'s explanation of the wave nature of matter Solution 4. (d) An atom contains negatively-charged particles. 5. De Broglie\'s explanation of the wave nature of matter. .