本题目来源于试卷: Nuclear & Quantum Physics E.4 Nuclear Fission，类别为 IB物理学
[单选题]
In a nuclear fission reaction, a nucleusvhfg,qh+(-av gcp6rc9u f8j ; of elementi 145ms s0;r6+ixmgw6hgdzm v $X$ absorbs a neutron and decays into a nucleus of element $Y$ and a nucleus of element $Z$.
X+n→Y+Z+2n
Which of the following statements are true about the binding energies are likely true:
I. Binding energy per nucleon of $Y$ is greater than the binding energy per nucleon of $X$.
II. Total binding energy of $Y$ and $Z$ is less than the total binding energy of $X$.
III. Total binding energy of $Y$ and $Z$ is greater than the total binding energy of $X$.
IV. Binding energy per nucleon of $Y$ is less than the binding energy per nucleon of $X$.
A. Only $I$
B. $I$ and $III$
C. Only $IV$
D. $II$ and $IV$
参考答案: B
本题详细解析:
Explanation: In a fission reaction a heavy nucleus splits into two lighter nuclei to release energy. So the total binding energy of daughter nuclei (Y and Z) is greater than the parent nucleus (X). From the graph, it can be seen that the binding energy per nucleon of Y (or Z) is greater than binding energy per nucleon of X
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