My periodic table poster is now available! Dubnium does not occur in nature, and it has no isotopes that last long enough to allow significant quantities to be accumulated. It is essentially a laboratory curiosity. Compare at other websites: periodictable.com Wikipedia WebElements Museum Display Minerals Translations and Etymology Science Fiction (Main Site) Comics Collections: Poster Samples Sample from the Everest Set. Up until the early 1990's a company in Russia sold a periodic table collection with element samples. At some point their American distributor sold off the remaining stock to a man who is now selling them on eBay. The samples (except gases) weigh about 0.25 grams each, and the whole set comes in a very nice wooden box with a printed periodic table in the lid. Radioactive elements like this one are represented in this particular set by a non-radioactive dummy powder, which doesn't look anything like the real element. (In this case a sample of the pure element isn't really practical anyway since the element exists as a short-lived laboratory curiosity only.) Amusingly, this ampule is labeled Nilsbohrium, a name for this element which was contested until 1997 when it was replaced by Dubnium as part of an international settlement involving a total of nine element names and a lot of horse trading. Here is an article about the naming controversy. To learn more about the set you can visit my page about element collecting for a general description and information about how to buy one, or you can see photographs of all the samples from the set displayed on my website in a periodic table layout or with bigger pictures in numerical order. Source: Rob Accurso Contributor: Rob Accurso Acquired: 7 February, 2003 Text Updated: 29 January, 2009 Price: Donated Size: 0.2" Purity: 0% Poster sample. This great seal of the City of Dubna, Russia appears in my Photographic Periodic Table Poster representing dubnium, which was discovered there and is named after the city. This highly unstable element can't reasonably be photographed, and a picture of its namesake seemed like a reasonable alternative. The sample photograph includes text exactly as it appears in the poster, which you are encouraged to buy a copy of. Source: Theodore Gray Contributor: Theodore Gray Acquired: 15 April, 2006 Text Updated: 4 May, 2007 Price: Donated Size: 6" Purity: 0% Photo Card Deck of the Elements. In late 2006 I published a photo periodic table and it's been selling well enough to encourage me to make new products. This one is a particularly neat one: A complete card deck of the elements with one big five-inch (12.7cm) square card for every element. If you like this site and all the pictures on it, you'll love this card deck. And of course if you're wondering what pays for all the pictures and the internet bandwidth to let you look at them, the answer is people buying my posters and cards decks. Hint hint. Source: Theodore Gray Contributor: Theodore Gray Acquired: 19 November, 2008 Text Updated: 21 November, 2008 Price: $35 Size: 5" Composition: HHeLiBeBCNOFNeNaMg AlSiPSClArKCaScTiVCrMn FeCoNiCuZnGaGeAsSeBrKr RbSrYZrNbMoTcRuRhPdAg CdInSnSbTeIXeCsBaLaCePr NdPmSmEuGdTbDyHoErTm YbLuHfTaWReOsIrPtAuHgTl PbBiPoAtRnFrRaAcThPaUNp PuAmCmBkCfEsFmMdNoLrRf DbSgBhHsMtDsRgUubUutUuq UupUuhUusUuo    My periodic table poster is now available!