Question

Rutherford’s α-scattering experiment showed that most α particles directed toward a thin metallic foil passed through with only slight deviations. From this evidence we can conclude that

1. the foil was too thin.
2. an α particle is a type of light which should not be deflected.
3. the mass of the atom is concentrated in a very small area.
4. α particles are uncharged.
5. α particles are too small to hit anything.

Answer 1

3. the mass of the atom is concentrated in a very small area.

Step-by-step explanation:

As the Rutherford experiment has shown that majority of particles has passed the foil with slightest deviations. It shows that the most of the part of atom is empty which doesn't effect the deviation of alpha particles. Few particles are deflected at significant angels shows that there must be a mass occupying the smaller area of atom which is later on called as nucleus.