What Happens to the Atomic Number (Z) and the Mass

question 152

Multiple Choice

What happens to the atomic number (Z) and the mass number (A) when a nucleus emits a beta particle (electron) ?

• A) Z increases by 1; A is unchanged.
• B) Z is unchanged; A is unchanged.
• C) Z decreases by 2; A decreases by 4.
• D) Z decreases by 1; A is unchanged.

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