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Physics
Physics
Problem
When a nucleus emits one
α
\alpha
α
–particle, how are its mass number
A
A
A
and atomic number
Z
Z
Z
altered? a)
A
A
A
decreases by 2,
Z
Z
Z
decreases by 2 b)
A
A
A
decreases by 4,
Z
Z
Z
decreases by 2 c)
A
A
A
remains unchanged,
Z
Z
Z
decreases by 2 d)
A
A
A
decreases by 4,
Z
Z
Z
decreases by 1
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