Answer:
Alpha Particles > Beta Particles > Gamma Radiation
HEAVIEST--------->------------->------------>----------->-------->--------LIGHTEST
Explanation:
Mass of Alpha Particles = 4.0012 amu (Helium Nucleus)
Mass of Beta Particles = 5.5 x 10⁻⁴ amu (An electron)
Mass of Gamma Radiations = No mass (Photon of Energy)
