I am struggling to work out what evidence this experiment provides to show that the nucleus of an atom contains most of its mass.
Which of the following is not a valid conclusion from Rutherford’s alpha particle scattering experiment?
A The atom is mainly empty space.
B The mass of the atom is mostly concentrated in the nucleus.
C The nucleus must be positively charged.
D The nucleus must be very small compared to the atom
The answer is C, but I don't understand why B is incorrect.