Question

no mass select select beta radiation alpha radiation gamma radiation

Explanation:

To determine which radiation has no mass, we recall the properties of each type:

• Beta Radiation: Consists of beta particles (electrons or positrons), which have mass.
• Alpha Radiation: Consists of alpha particles (helium nuclei, \(^4_2\text{He}\)), which have mass.
• Gamma Radiation: Consists of high - energy photons. Photons are massless.

So Gamma Radiation is the one with no mass.

Answer:

Gamma Radiation