核子
拉化学搭物理学里向，核子（nucleon）是组成原子核个粒子。每个原子核侪拥有至少一个核子，每个原子又是由原子核搭围绕原子核个一个或多个电子所组成。核子共有两种：中子搭质子。任意原子同位素个质量数就是渠个核子个总数。因此有辰光人们也会称迭个数字为“核子数”。
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