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← ScienceWhich effect allows alpha decay in heavy nuclei?
A)Quantum tunneling penetrates potential barrier✓
B)Neutron emission exceeds binding energy
C)Nuclear fission splits into fragments
D)Gamma radiation causes immediate ionization
💡 Explanation
Quantum tunneling allows alpha particles to escape the nucleus, because there is a probability the particle will tunnel through the potential barrier, therefore decay occurs, rather than remaining trapped, because the potential barrier is finite.
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