Gamma Radiation is emitted from the nucleus of an unstable atom and is ionizing.

Gamma Radiation is emitted from the nucleus of an unstable atom and is ionizing.

• 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 originates in the nucleus of an unstable atom and has enough energy to ionize matter. That combination—nuclear origin and ionizing capability—defines gamma rays. They’re highly penetrating and can eject electrons from atoms, which is why they are classified as ionizing radiation. The other options describe radiation from the electron cloud or lower-energy forms of light (visible or infrared), which are not ionizing under typical exposure. So, the description that gamma radiation comes from the nucleus and is ionizing matches its true nature.

Gamma radiation originates in the nucleus of an unstable atom and has enough energy to ionize matter. That combination—nuclear origin and ionizing capability—defines gamma rays. They’re highly penetrating and can eject electrons from atoms, which is why they are classified as ionizing radiation. The other options describe radiation from the electron cloud or lower-energy forms of light (visible or infrared), which are not ionizing under typical exposure. So, the description that gamma radiation comes from the nucleus and is ionizing matches its true nature.