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The samples are then professionally cast in acrylic
Although arsenic is toxic to many organisms
occurring only as the decay product of various heavier elements
This means that when the cube is put within an electric field light-blue plasma is produced within the display
All of the astatine's isotopes are short-lived
Dubnium Cube Element SR-71 Titanium The samples are then professionallyDubnium's atomic number is 105 and its symbol is Db, and it does not occur naturally on Earth, so it has to be produced artificially. It is highly radioactive; the most stable known isotope, dubnium 268, has a half life of about 28 hours. This has greatly limited extended research on dubnium. Two different groups claimed to discover the element around the same time, both proposed a different name for the element. After years of dispute over the naming
