To answer the questions regarding the nuclear reaction \( ^{224}{88}\text{Ra} \rightarrow ^{4}{2}\text{He} + \frac{A}{Z} X \), we can break down the components.
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What is the atomic mass of the new atom?: The atomic mass of the new atom \( A \) can be calculated using conservation of mass. \[ 224 = 4 + A \Rightarrow A = 224 - 4 = 220 \] So the atomic mass \( A = 220 \).
Answer: e. 220
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What is the atomic number of the new atom?: The atomic number \( Z \) can be calculated using conservation of charge. \[ 88 = 2 + Z \Rightarrow Z = 88 - 2 = 86 \] So the atomic number \( Z = 86 \).
Answer: b. 86
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What is the symbol of the new atom?: The element with atomic number 86 is Radon, which has the symbol \( \text{Rn} \).
Answer: a. Rn
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What type of decay is demonstrated here?: The reaction shows the emission of an alpha particle ( \( ^{4}_{2}\text{He} \)). Reactions that emit alpha particles are classified as \( \text{Alpha Decay} \).
Answer: f. Alpha Decay
Summary of Answers
- e. 220
- b. 86
- a. Rn
- f. Alpha Decay