Gamma radiation.

Gamma radiation.

• A. Emitted from the nucleus of an unstable atom and is ionizing.
• B. Emitted from the electron cloud and is non-ionizing.
• C. Visible light
• D. Infrared radiation

Answer: (A)

Gamma radiation is high-energy electromagnetic radiation that comes from the nucleus of an unstable atom, usually emitted during nuclear transitions or radioactive decay. Because these photons carry a lot of energy, they can ionize atoms they encounter, meaning they can eject electrons and create charged particles—this is why gamma radiation is considered ionizing. This helps distinguish it from radiation emitted by the electron cloud, which corresponds to much lower-energy photons such as visible light or infrared and is non-ionizing. Gamma rays are not visible light or infrared; they sit at the high-energy end of the spectrum and require dense shielding (like lead or thick concrete) to attenuate.

Gamma radiation is high-energy electromagnetic radiation that comes from the nucleus of an unstable atom, usually emitted during nuclear transitions or radioactive decay. Because these photons carry a lot of energy, they can ionize atoms they encounter, meaning they can eject electrons and create charged particles—this is why gamma radiation is considered ionizing. This helps distinguish it from radiation emitted by the electron cloud, which corresponds to much lower-energy photons such as visible light or infrared and is non-ionizing. Gamma rays are not visible light or infrared; they sit at the high-energy end of the spectrum and require dense shielding (like lead or thick concrete) to attenuate.