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Which outcome occurs when helium-4 gains a neutron?

A)Decreased average binding energy
B)Increased total nuclear charge
C)Alpha positive particle emission starts
D)Greater electrostatic potential decreases

💡 Explanation

Adding a neutron to helium-4 forms helium-5, but the strong nuclear force interaction is not optimized; the average binding energy decreases because the weak nuclear force is relatively unchanged; therefore helium-5 will decay, unstable, rather than become stable increasing the potential.

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