Dubnium'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 of the element, it was named after Dubna, a town in Moscow, Russia, where one of the research groups that discovered it was located. This display is contained within crystal clear Lucite acrylic. Please note that this item might be classified as hazardous material in certain countries. We suggest checking local guidelines to ensure compliance before placing your order.
