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When a Substance Decays by Beta Emission,the Mass Number of the Nucleus

Question 30

Multiple Choice

When a substance decays by beta emission,the mass number of the nucleus ________ and the atomic number ________.

A) decreases by 2,remains the same
B) increases by 2,remains the same
C) remains the same,decreases by 1
D) remains the same,increases by 1

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