Concept:Ionizing power depends on a particle's electrical charge and mass, which govern how forcefully it interacts with electrons in target atoms.
Solution:- The alpha (\(\alpha\)) particle contains 2 protons, giving it a strong +2e charge, and has a large mass of 4 amu.
- Because of its large mass, it travels relatively slowly, spending more time near atomic electron clouds. Combined with its +2e charge, it rapidly and violently pulls electrons away from nearby atoms, causing intense ionization over a very short distance.
- Therefore, \(\alpha\) particles have the highest ionizing power, significantly greater than beta or gamma rays.
Why other options are incorrect:Gamma rays have no charge and weak ionization. Beta particles have -1e charge and low mass, giving moderate ionization. Neutrons have no charge, ionizing indirectly via nuclear collisions.
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