离子半径表如下：
| 元素符号 | 原子序数 | 离子半径（nm） |
| :------: | :------: | :----------: |
| Li |3 |0.100764 |
| Be |4 |0.0455 |
| B |5 |0.0276 |
| C |6 |0.016-0.146 |
| N |7 |0.016+0.0138|
| O |8 |0.149-0.0081|
| F |9 |0.133+0.0081|
| Na | 11 |0.10102 |
| Mg | 12 |0.072 |
| Al | 13 |0.0535 |
| Si | 14 |0.0415 |
| P | 15 |0.044+0.038 |
| S | 16 |0.037+0.029 |
| Cl | 17 |0.012+0.027 |
| K | 19 |0.138 |
| Ca | 20 |0.121 |
| Sc | 21 |0.0745+0.086 |
| Ti | 22 |0.067+0.0605+0.064 |
| V | 23 |0.058+0.054+0.073 |
| Cr | 24 |0.0615+0.055+0.049+0.044 |
| Mn | 25 |0.061 |
| Fe | 26 |0.065 |
| Co | 27 |0.065 |
| Ni | 28 |0.069 |
| Cu | 29 |0.074 |
| Zn | 30 |0.0745 |
| Ga | 31 |0.076 |
| Ge | 32 |0.074 |
| As | 33 |0.069 |
| Se | 34 |0.064 |
| Br | 35 |0.067+0.058 |
| Kr | 36 |0.064 |
建议：
离子半径受电子排布和电子云效应的影响，同一周期内从左到右原子半径逐渐减小。
同一主族内从上到下原子半径逐渐增大。
离子半径的变化规律可以帮助预测和解释元素之间的化学反应性质。