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← ScienceWhich outcome occurs when alpha particles encounter a positively charged nucleus?
A)Penetration via quantum tunneling increases✓
B)Reflection coefficient always equals one
C)Scattering angle approaches ninety degrees
D)Kinetic energy loss decreases steadily
💡 Explanation
An opportunity for a small percentage of alpha particles to overcome the potential barrier to get inside increases, causing penetration by quantum tunneling rather than simple deflection, because the energy is less than required classically; therefore tunneling increases, rather than simple scattering alone.
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