| 1 | Several methods to prevent alkalis from jeopardizing are provided . | |
| 2 | And, in fact, this is the case for all the alkali metals. | |
| 3 | Francium is the densest of the Alkali Metals and also radioactive. | |
| 4 | The hydrogenation of alkali metals using lanthanide trichloride and naphthalene as catalyst has been studied. | |
| 5 | It does, however, react with fluorine, molten sodium hydroxide, and molten alkali metals. |