What Happens to the Mass Number and the Atomic Number

question 63

Multiple Choice

What happens to the mass number and the atomic number of an element when it undergoes alpha decay?

• A)The mass number decreases by 4 and the atomic number decreases by 2.
• B)The mass number does not change and the atomic number increases by 1.
• C)The mass number increases by 4 and the atomic number does not change.
• D)The mass number increases by 2 and the atomic number decreases by 1.
• E)The mass number does not change and the atomic number increases by 2.

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