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What change in the mass number of a nucleus occurs when the nucleus emits an alpha particle?
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What change in the mass number of a nucleus occurs when the nucleus emits an alpha particle?

User MisutoWolf
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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:

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.

User Abdul Razak
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