[{"from": "human", "value": "Based on the given information, design a molecule that meets the desired specifications. The molecule appears as a silvery soft metal that becomes grayish white upon exposure to air. Shipped as a solid or molten liquid. Burns violently with explosions that may spatter the material. Used for making gasoline additives, electric power cable, sodium lamps, other chemicals."}, {"from": "gpt", "value": "[Na]"}]