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When a nucleus emits an alpha particle, the mass number of the nucleus ____________. (2 points)

a
decreases

b
increases

c
remains the same

d
doubles

Respuesta :

B is the correct answer

Answer:

When a nucleus emits an alpha particle, the mass number of the nucleus A. decreases!!!

Explanation:

An atom releases a Alpha particle, its atomic number decreases by two and its mass number decreases by 4.

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