Beta particles ionize an atom_________________?
Correct answer: B. Due to the electrostatic force of repulsion
- A. Due to the electrostatic force of attraction
- B. Due to the electrostatic force of repulsion
- C. Due to a direct collision
- D. Due to the gravitational force
Explanation
A beta-minus particle is an electron, so it repels the electrons bound in an atom through electrostatic repulsion and can knock them out, causing ionisation. Direct collision is a tempting choice because an energy transfer occurs during the encounter, but the force responsible is electrostatic.
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About Radioactive Decay
Radioactive decay is the spontaneous transformation of unstable nuclei, described by decay constant, activity, half life and the exponential decay law. Work includes alpha, beta and gamma emissions, decay equations and remaining nuclei, with half life distinguished from the time required for complete decay.
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