| Metals | ||
| Element | Reactivity | |
| lithium rubidium potassium sodium | Li Rb K Na | Reacts with cold H2O and acids, replacing hydrogen. Reacts with O2 forming oxides. |
| strontium barium calcium | Sr Ba Ca | Reacts with hot H2O (not cold H2O) and acids, replacing hydrogen. Reacts with O2 forming oxides. |
| magnesium aluminum manganese zinc chromium iron cadmium | Mg Al Mn Zn Cr Fe Cd | Reacts with steam (not cold H2O) and acids, replacing hydrogen. Reacts with O2 forming oxides. |
| cobalt nickel tin lead | Co Ni Sn Pb | Does not react with H2O. Reacts with acids, replacing hydrogen. Reacts with O2, forming oxides. |
| hydrogen | H | Reacts with O2, forming oxides. |
| antimony bismuth arsenic copper mercury | Sb Bi As Cu Hg | Reacts with O2, forming oxides. |
| silver platinum gold | Ag Pt Au | Fairly unreactive, forming oxides only indirectly. |
| Non-Metals | |
| F | fluorine |
| Cl | chlorine |
| Br | bromine |
| I | iodine |
| S | sulfur |