Complete the Following Nuclear Decay Reaction ${ }_{88}^{221} \mathrm{Ra} \rightarrow+{ }_{2}^{4} \mathrm{He}$

question 4

Multiple Choice

Complete the following nuclear decay reaction. ${ }_{88}^{221} \mathrm{Ra} \rightarrow+{ }_{2}^{4} \mathrm{He}$

• A) \({ }_{86}^{217} \mathrm{Rn}\)
• B) \({ }_{88}^{217} \mathrm{Ra}\)
• C) \({ }_{92}^{217} \mathrm{U}\)
• D) \({ }_{86}^{225} \mathrm{Rn}\)
• E) \({ }_{90}^{225} \mathrm{Th}\)

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