| Active principles | Rating | Bibliogr. | Expand | |
|---|---|---|---|---|
| 1 | Metals, Alkali | 100 | + | |
| 2 | Chalcogens | 41 | + | |
| 3 | Metals, Alkaline Earth | 37 | + | |
| 4 | Metals, Heavy | 26 | + | |
| 5 | Metals, Light | 18 | + | |
| 6 | Transition Elements | 15 | + | |
| 7 | Noble Gases | 12 | + | |
| 8 | Carbon | 3 | + | |
| 9 | Halogens | 2 | + | |
| 10 | Elements, Radioactive | 2 | + | |
| 11 | Nitrogen | 1 | + | |
| 12 | Phosphorus | 1 | + | |
| 13 | Lanthanoid Series Elements | 1 | + | |
| 14 | Metals, Rare Earth | 1 | + |