AQA A Level Physics 3.2.1.2 Stable and unstable nuclei

Which nucleons electrostatically repel each other?

• Protons

• Neutrons

• Electrons

• Nucleons

What is the role of the strong nuclear force in the nucleus?

• It causes the nucleus to expand.

• It keeps the nucleus stable.

• It allows the nucleus to emit light.

• It makes the nucleus rotate.

Which particles in the atom exhibit the strong nuclear force?

• Protons

• Neutrons

• Electrons

• Nucleons

What is the approximate diameter of a nucleon?

At what distance does the strong nuclear force overcome the electrostatic repulsion force?

At what distance does the strong nuclear force become a repulsive force?

Alpha particle

Beta particle

No charge