When an Unstable Nucleus Decays by Emitting an Alpha Particle $\mathrm { Z }$

question 124

Multiple Choice

When an unstable nucleus decays by emitting an alpha particle, the atomic number $\mathrm { Z }$ of the nucleus

• A) decreases by 4 .
• B) decreases by 2 .
• C) increases by \(4 .\)
• D) increases by 2 .
• E) remains unchanged.

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