Which statement concerning α-particles, is correct?
Correct answer: B. When α particle travel through air, they cause ionization
- A. An α-particle has charge +4e
- B. When α particle travel through air, they cause ionization
- C. When α-particle travel through a sheet of gold foil, they can not make the gold radioactive
- D. None of the above
Explanation
Option B is correct because alpha particles have high ionization power but low penetrating power.
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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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