Input interpretation
![astatine iodine | atomic mass](../image_source/025340a3b97811cbbd4995e7ebad93c9.png)
astatine iodine | atomic mass
Results
![astatine | 210 u (unified atomic mass units) iodine | 126.90447 u (unified atomic mass units)](../image_source/662db6981b2aab2d2b890f0048c484e9.png)
astatine | 210 u (unified atomic mass units) iodine | 126.90447 u (unified atomic mass units)
![astatine | atomic mass | 210 u (unified atomic mass units) (atomic mass number given for longest-lived isotope)](../image_source/6fbb7431ae4f15a7fa6bcae649c798f7.png)
astatine | atomic mass | 210 u (unified atomic mass units) (atomic mass number given for longest-lived isotope)
Relative values
![| visual | ratios | | comparisons iodine | | 0.604 | 1 | 39.6% smaller astatine | | 1 | 1.65 | 65% larger](../image_source/9be6df32652677835757ecfbf35b8311.png)
| visual | ratios | | comparisons iodine | | 0.604 | 1 | 39.6% smaller astatine | | 1 | 1.65 | 65% larger