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Tibin Mathew · Answer 1 · 2022-08-10T01:42:11+0000

Protons are positively charged. When a nucleus emits an alpha particle, these changes happen: the mass number decreases by 4. the atomic number decreases by 2.

Unnawut · Answer 2 · 2022-08-12T10:18:02+0000

Answer:

Protons are positively charged. When a nucleus emits an alpha particle, these changes happen: the mass number decreases by 4. the atomic number decreases by 2.

Step-by-step explanation:

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