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Discovered using flame spectroscopy
Uranium CubeA real piece of autunite with a natural green glow when illuminated by UV light
It is a silvery white metal
000 years old
This is why Gallium is not allowed in carry-on bags on a plane
Tantalum Element Cube SR-71 Titanium Discovered using flame spectroscopyTantalum's atomic number is 73 and its symbol is Ta. Tantalum is named after the Greek mythology villain Tantalus. It is a very lustrous bluish grey transition metal that is considered a technology critical element. Its use in electronics is to make tantalum capacitors. If you have looked at the guts of electronics, they are the parts that look like flat match heads. Tantalum compounds are also used in body implants and coatings because it is highly
