| Hydrogen |  | 
 
| Helium |  | 
 
| Lithium |  | 
 
| Beryllium |  | 
 
| Boron |  | 
 
| Carbon |  | 
 
| Nitrogen |  | 
 
| Oxygen | | Mutagen, Reproductive Effector, Human Data |  
  | 
 
| Fluorine |  | 
 
| Neon |  | 
 
| Sodium |  | 
 
| Magnesium | N/A | 
 
| Aluminum |  | 
 
| Silicon |  | 
 
| Phosphorus | | Agricultural Chemical And Pesticide, Reproductive Effector, Human Data |  
  | 
 
| Sulfur | N/A | 
 
| Chlorine | N/A | 
 
| Argon |  | 
 
| Potassium |  | 
 
| Calcium | N/A | 
 
| Scandium | N/A | 
 
| Titanium | | Tumorigen, Reproductive Effector |  
  | 
 
| Vanadium |  | 
 
| Chromium |  | 
 
| Manganese | | Tumorigen, Human Data, Primary Irritant |  
  | 
 
| Iron |  | 
 
| Cobalt |  | 
 
| Nickel | | Tumorigen, Mutagen, Reproductive Effector |  
  | 
 
| Copper | | Tumorigen, Reproductive Effector, Human Data |  
  | 
 
| Zinc | | Mutagen, Human Data, Primary Irritant |  
  | 
 
| Gallium |  | 
 
| Germanium |  | 
 
| Arsenic | | Tumorigen, Drug, Mutagen, Reproductive Effector, Human Data |  
  | 
 
| Selenium | | Tumorigen, Reproductive Effector |  
  | 
 
| Bromine |  | 
 
| Krypton | N/A | 
 
| Rubidium |  | 
 
| Strontium | N/A | 
 
| Yttrium |  | 
 
| Zirconium |  | 
 
| Niobium |  | 
 
| Molybdenum | | Mutagen, Reproductive Effector |  
  | 
 
| Technetium | N/A | 
 
| Ruthenium | N/A | 
 
| Rhodium |  | 
 
| Palladium |  | 
 
| Silver |  | 
 
| Cadmium | | Tumorigen, Mutagen, Reproductive Effector, Human Data |  
  | 
 
| Indium |  | 
 
| Tin |  | 
 
| Antimony | N/A | 
 
| Tellurium |  | 
 
| Iodine | | Reproductive Effector, Human Data |  
  | 
 
| Xenon | N/A | 
 
| Cesium |  | 
 
| Barium |  | 
 
| Lanthanum | N/A | 
 
| Cerium | N/A | 
 
| Praseodymium | N/A | 
 
 
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