Final answer:
When emitting an alpha particle, the nucleus experiences a decrease in mass and charge. For gamma ray emission, there is no change in mass or charge.
Explanation:
Alpha particle:
- Change in mass: Decreases by 4 units (as the alpha particle is emitted).
- Change in charge: Decreases by 2 units (as the alpha particle has a charge of +2).
Gamma ray:
- Change in mass: No change in mass.
- Change in charge: No change in charge, as gamma rays carry no charge.
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