Particle and Nuclear Physics I

• using a double thickness foil

• using a foil made of a metal with fewer protons in its nuclei

• A

• B

• C

• D

Which statement about two nuclei that are isotopes of the same element is correct?

• The nuclei each have the same acceleration when in the same uniform electric field.

• The nuclei each have the same number of neutrons.

• The nuclei each have the same number of nucleons.

• Uncharged atoms containing the nuclei each have the same number of electrons.

What is a conclusion from the alpha-particle scattering experiment?

• Protons and electrons have equal but opposite charges.

• Protons have a much larger mass than electrons.

• The nucleus contains most of the mass of the atom.

• The nucleus of an atom contains protons and neutrons.