Final answer:
The metal discovered by 2 Spanish chemists in 1783 in samples of the mineral wolframite is Tungsten (d).
Step-by-step explanation:
The metal discovered by 2 Spanish chemists in 1783 in samples of the mineral wolframite is Tungsten (d).
In ancient civilizations, iron, copper, silver, and gold were known metals. While copper, silver, and gold can be found in elemental form in nature, iron occurs mainly in oxidized forms. The earliest known iron implements were made from iron meteorites. It took thousands of years before civilizations developed the technology to extract iron from its ores.