10. This mass is almost equal to that of a proto Exercise 1.3
wch experimental evidence Indicates that
a electrons are negatively charged particles
1) electrons are the consent of all atos?
la Rutherford's experiment, most of the alpha particles passed through

gold fod underted. What does this indicate
In Rutherford's experiment, some of the a particles were deflected by s
angles. What does this indicate?
What was determined from Man's oil drop experiment?
Three particles are fired into a box that is positively changed on one side
negatively charged on the other side. The result is shown in Figure 1.5.​