Answer:
Almost all the mass and all the positive charge of the atom is concentrated in a very small region called the nucleus and the negative charge was distributed throughout the rest of the atom
Step-by-step explanation:
Rutherford's experiment was to bombard a gold foil with alpha particles, finding that most of the particles change their direction very little, some change it a lot and very few almost recede; With these measurements he came to the conclusion that almost the entire mass of the atom had to be in a very small space that I call a nucleus, in addition as the alpha particles have two positive charges so that there is a force of repulsion the charge of the nucleus must also be positive; with this I enunciate an atomic model:
Almost all the mass and all the positive charge of the atom is concentrated in a very small region called the nucleus and the negative charge was distributed throughout the rest of the atom