1/5单选题
难度：
1.
是较为安全的高效核聚变反应原料，原子核内中子数是
是较为安全的高效核聚变反应原料，原子核内中子数是 | A | 1 |
| B | 2 |
| C | 3 |
| D | 5 |
- 提示1：
- 5YWD57Sg56ym5Y+35bem5LiL6KeS5qCH5Luj6KGo6LSo5a2Q5pWw77yM5bem5LiK6KeS5qCH5Luj6KGo6LSo6YeP5pWw44CC
- 提示2：
- 6LSo5a2Q5pWwK+S4reWtkOaVsD3otKjph4/mlbDjgII=
正确答案：QQ==
5Lit5a2Q5pWwPei0qOmHj+aVsC3otKjlrZDmlbA9My0yPTEu5pWF6YCJ5oupQemhueOAgg==
2/5单选题
难度：
2.下列关于13C的叙述正确的是
| A | 中子数为7 |
| B | 质子数为7 |
| C | 质量数为6 |
| D | 电子数为13 |
- 提示1：
- 5YWD57Sg56ym5Y+35bem5LiK6KeS5qCH5Li65YWD57Sg55qE6LSo6YeP5pWw44CC
- 提示2：
- 6LSo6YeP5pWwPei0qOWtkOaVsCvkuK3lrZDmlbA=
正确答案：QQ==
56Kz5YWD57Sg55qE6LSo5a2Q5pWwPeeUteWtkOaVsD0277yM5Zug5q2kQuOAgUTkuKTpobnplJnor6/vvJs8YnI+5bem5LiK6KeS5qCH5Li65Y6f5a2Q55qE6LSo6YeP5pWw77yM5Lmf5bCx5piv6LSo6YeP5pWw5Li6MTPvvIxD6aG56ZSZ77ybPGJyPuS4reWtkOaVsD3otKjph4/mlbAt5Lit5a2Q5pWwPTfvvIxB6aG55q2j56Gu44CC
3/5单选题
难度：
3.在自然界中氢有三种同位素1H、2H、3H，氧也有三种同位素16O、17O、18O，若由上述元素的原子形成水分子，其中水分子的相对分子质量最大值是
| A | 18 |
| B | 20 |
| C | 22 |
| D | 24 |
- 提示1：
- 5YWD57Sg56ym5Y+35bem5LiK6KeS5qCH5Luj6KGo55qE5piv6LSo6YeP5pWw44CC
正确答案：RA==
PHN1cD4zPC9zdXA+SDxzdWI+Mjwvc3ViPjxzdXA+MTg8L3N1cD5P55qE55u45a+55YiG5a2Q6LSo6YeP5pyA5aSn77yM5Yip55So6LSo6YeP5pWw5Luj5pu/55u45a+55Y6f5a2Q6LSo6YeP6K6h566X77yM6K+l5rC05YiG5a2Q55qE55u45a+55YiG5a2Q6LSo6YeP5Li6M8OXMisxOD0yNO+8jg==
4/5单选题
难度：
4.铋（Bi）在医药方面有重要应用．下列关于
和
的说法正确的是
和的说法正确的是 | A | 和都含有83个中子 |
| B | 和互为同位素 |
| C | 和的核外电子数不同 |
| D | 和分别含有126和127个质子 |
- 提示1：
- 5Zyo6KGo56S65Y6f5a2Q57uE5oiQ5pe25YWD57Sg56ym5Y+355qE5bem5LiL6KeS6KGo56S66LSo5a2Q5pWw77yM5bem5LiK6KeS6KGo56S66LSo6YeP5pWw
- 提示2：
- 6LSo5a2Q5pWw55u45ZCM6ICM5Lit5a2Q5pWw5LiN5ZCM55qE5ZCM5LiA56eN5YWD57Sg55qE5LiN5ZCM5Y6f5a2Q5LqS56ew5Li65ZCM5L2N57Sg44CC
正确答案：Qg==
5Zyo6KGo56S65Y6f5a2Q57uE5oiQ5pe25YWD57Sg56ym5Y+355qE5bem5LiL6KeS6KGo56S66LSo5a2Q5pWw77yM5bem5LiK6KeS6KGo56S66LSo6YeP5pWw77yM5omA5LulPGltZyB3aWR0aD0zNSBoZWlnaHQ9MjUgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC82OC8yMi9yQkFDSmxVc2FWdkRHSkxvQUFBQ0xNaGctZFU3OTgucG5nIiA+5ZKMPGltZyB3aWR0aD0zNSBoZWlnaHQ9MjUgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC82OC81OS9yQkFDSjFVc2FWdkR6MFJaQUFBQ0d3d1B1WUU5ODMucG5nIiA+55qE6LSo5a2Q5pWw55u45ZCM77yM6ICM5Lit5a2Q5pWw5LiN5ZCM77yM5LqM6ICF5LqS5Li65ZCM5L2N57Sg77yM6YCJ6aG5Quato+ehru+8jEHjgIFE5LiN5q2j56Gu77ybPGJyPuS6jOiAheeahOS4reWtkOaVsOWIhuWIq+aYrzIwOe+8jTgz77ydMTI25ZKMMjEw77yNODPvvJ0xMjfjgILotKjlrZDmlbDvvJ3moLjlpJbnlLXlrZDmlbDvvIzliJk8aW1nIHdpZHRoPTM1IGhlaWdodD0yNSBzcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwLzY4LzIyL3JCQUNKbFVzYVZ2REdKTG9BQUFDTE1oZy1kVTc5OC5wbmciID7lkow8aW1nIHdpZHRoPTM1IGhlaWdodD0yNSBzcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwLzY4LzU5L3JCQUNKMVVzYVZ2RHowUlpBQUFDR3d3UHVZRTk4My5wbmciID7nmoTmoLjlpJbnlLXlrZDmlbDpg73mmK84M+S4qu+8jOmAiemhuUPkuI3mraPnoa7vvJs8YnI+562U5qGI6YCJQuOAgg==
5/5单选题
难度：
5.有下列符号：35Cl和37Cl、O2和O3、1H216O和2H218O．下列有关说法正确的是
| A | 35Cl和37Cl互称为同素异形体 |
| B | O2和O3是氧元素的两种同位素 |
| C | 35和37表示的是质量数 |
| D | 1H216O和2H218O的相对分子质量相同 |
- 提示1：
- 5ZCM57Sg5byC5b2i5L2T5piv5oyH57uE5oiQ5YWD57Sg55u45ZCM5L2G5oCn6LSo5LiN55u45ZCM55qE54mp6LSo44CC
- 提示2：
- 6LSo5a2Q5pWw55u45ZCM6ICM5Lit5a2Q5pWw5LiN5ZCM55qE5ZCM5LiA56eN5YWD57Sg55qE5LiN5ZCM5Y6f5a2Q5LqS56ew5Li65ZCM5L2N57Sg44CC
正确答案：Qw==
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