Radioactivity

What is the primary reason for the spontaneous decay of atomic nuclei?

• Stable nuclei

• Unstable nuclei

• Low energy levels

• High energy levels

Which type of particle is composed of helium nuclei?

• Neutrons

• Beta particles

• Gamma rays

• Alpha particles

What is a characteristic of alpha particles?

• Composed of electrons

• High penetrating power

• Low energy

• High velocity

Which particles are known for having high velocity and more penetrating power than alpha particles?

• Beta particles

• Gamma rays

• Alpha particles

• Neutrons

What type of decay product is associated with the highest energy?

• Neutrons

• Gamma rays

• Beta particles

• Alpha particles