| Similarity | Rank | |
|---|---|---|
| nitrous | 0.852 | 29606 |
| tetrachloride | 0.840 | 38419 |
| monoxide | 0.829 | 12904 |
| sulphur | 0.824 | 6647 |
| dioxide | 0.813 | 4762 |
| carbon | 0.811 | 3195 |
| benzene | 0.811 | 21692 |
| vanadium | 0.806 | 61827 |
| nitrogen | 0.805 | 6386 |
| hexafluoride | 0.804 | 78594 |
| &sub2; | 0.803 | 34174 |
| ferric | 0.801 | 42961 |
| yttrium | 0.800 | 62626 |
| nitric | 0.800 | 22052 |
| beryllium | 0.793 | 52345 |
| methane | 0.790 | 11786 |
| phosgene | 0.789 | 98640 |
| particulate | 0.789 | 25930 |
| ammonium | 0.788 | 22976 |
| ethane | 0.787 | 70857 |
| nox | 0.786 | 28969 |
| chromium | 0.785 | 22870 |
| titanium | 0.780 | 24410 |
| oxidize | 0.780 | 38122 |
| trioxide | 0.779 | 83599 |