The total charge before and after the change remains the same, but the total atomic mass is different.
The relative numbers of protons and neutrons are the same before and after the change.
• The total atomic mass before and after the change remains the same, but the total charge is different.
The relative numbers of protons and neutrons can differ
O before and after the change, but the total number of those particles remains the same.
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The correct statement about the number of protons and neutrons in a nuclear change is:
The relative numbers of protons and neutrons can differ before and after the change, but the total number of those particles remains the same.
In a nuclear reaction, protons and neutrons can be converted into each other (for example, during beta decay), which means their relative numbers can change. However, the total number of nucleons (protons + neutrons) in a nuclear reaction is generally conserved.
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