23.1 ✨ Nuclear radiation

What are isotopes of atoms with unstable nuclei called?

• Isotopes of atoms with unstable nuclei are called radioactive isotopes.

• Stable isotopes

• Neutral isotopes

• Non-reactive isotopes

Match the different types of radiation with their charge.

• alpha

• 2+

• gamma

• 0

• beta

• 1-

What particle emitted during radioactive decay has a mass of 4 amu?

• alpha particle

• beta particle

• gamma ray

• neutron

Which type of radiation consists of high-energy electrons?

• Beta radiation

• Alpha radiation

• Gamma radiation

• Neutron radiation

Alpha particles have low penetrating power because of their ________.

• mass and charge

• speed

• size

• energy

The diagram above shows alpha particles, beta particles, and gamma rays passing through a screen and between two charged plates. What can you infer about the identity of each radiation path (a, b, and c)?

• Path a is alpha particles, path b is beta particles, and path c is gamma rays.

• Path a is beta particles, path b is gamma rays, and path c is alpha particles.

• Path a is gamma rays, path b is alpha particles, and path c is beta particles.

• Path a is gamma rays, path b is beta particles, and path c is alpha particles.

• 1.6 × 10^-12 J

• 3.2 × 10^-13 J

• 1 × 10^{-12} J

• 1.6 × 10^{-13} J

• 3.2 × 10^{-13} J

• 1.6 × 10^-12 J

• 1.0 × 10^-13 J