| Similarity | Rank | |
|---|---|---|
| arsenic | 0.827 | 26971 |
| cadmium | 0.819 | 41468 |
| cesium | 0.787 | 91358 |
| dioxins | 0.783 | 77636 |
| fluorine | 0.778 | 79157 |
| strontium | 0.767 | 86420 |
| benzene | 0.753 | 46443 |
| radium | 0.751 | 78644 |
| bromine | 0.750 | 75999 |
| tritium | 0.749 | 73668 |
| contaminants | 0.748 | 17549 |
| radioactive | 0.745 | 15026 |
| sulfur | 0.744 | 22001 |
| iodine | 0.743 | 22213 |
| beryllium | 0.742 | 85366 |
| PCBs | 0.741 | 43934 |
| toxics | 0.739 | 88988 |
| pollutants | 0.739 | 16074 |
| chromium | 0.732 | 30704 |
| radioactivity | 0.732 | 42842 |
| sulfide | 0.730 | 49224 |
| carcinogenic | 0.730 | 37544 |
| monoxide | 0.730 | 23477 |
| antimony | 0.726 | 86112 |
| chlorine | 0.726 | 17545 |