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核电荷数和核外电子数的区别

更新时间: 2020-10-29 00:00:00     

每一个质子带一个单位正电荷,原子有多少个质子就是带多少单位正电荷,质子所带的正电荷数就叫核电荷数;核外电子数就是原子核外的电子数。

之间的关系如下:

核电荷数=质子数=核外电子数=原子序数;

质子数+中子数=相对原子质量=质量数。

关键词: 电荷 电子 区别

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