(a(i))[1]
Observation: most particles travel straight through the foil. State what conclusions can be drawn about the atomic model from these observations.
(a(ii))[1]
Observation: a few particles bounce back or are deflected through large angles. State what conclusions can be drawn about the atomic model from these observations.
(b(i))[2]
State and explain which path P, Q or R represents a beam of alpha particles.
(b(ii))[1]
State and explain which way the electric field between the plates is directed.
(c)[2]
Calculate the starting mass of curium-242 in the sample.