| http://www.w3.org/ns/prov#value | - Although elements with atomic numbers all the way through 112, plus 114, 116, and 118, have been discovered (the latter two at Berkeley Lab earlier this year), seaborgium is the heaviest element whose chemical properties have been widely investigated by experiment so far. (Editor's note: On July 27, 2001, researchers retracted their announcement of the discovery of element 118 in a correspondence
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