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Gaokao Physics Practice Question

1. (6 分) 1934 年, 约里奥 - 居里夫妇用 $\alpha$ 粒子轰击铝核 ${ }_{13}^{27} \mathrm{Al}$, 产生了第一个人 工放射性核素 $\mathrm{X}: \alpha+{ }_{13}^{2 \top} \mathrm{A} \rightarrow \mathrm{n}+\mathrm{X}$. $\mathrm{X}$ 的原子序数和质量数分别为 $($ )

  1. A.15 和 28
  2. B.15 和 30
  3. C.16 和 30
  4. D.17 和 31

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