Thread:Qwertyxp2000 the second/@comment-29527649-20161205191512/@comment-24577221-20161206200532

On the subject of naming elements... The International Union of Pure and Applied Chemistry (IUPAC) has officially named four new elements and added them to the periodic table. The completes the current bottom row of the table, bringing us to 118 officially-acknowledged elements. All of the new ones are extremely unstable/radioactive. It took 2.5 × 1019 particle collisions to create just the first atom of element 118, oganesson, and only a total of 3 (or possibly 4) atoms of it have been detected in total. Its half-life based on observations of the 3 definitely-existing atoms is 0.89 +1.07 −0.31  ms.