The seventh period of the periodic table is now filled, and this is officially

December 30 last year, the International Union of Pure and Applied Chemistry (International Union of Pure and Applied Chemistry) announced that the discovery of chemical elements 115, 117, 118 and 113 officially confirmed. As for elements 115 and 117 of the elements of the periodic table, they were opened by the Russian Joint Institute for Nuclear Research (JINR), Livermore National Laboratory (USA) and Oak Ridge National Laboratory (USA).

As for element 118, JINR and the Livermore National Laboratory were named its discoverers. 113 elements were discovered by specialists from the Japanese institute RIKEN. Interestingly, the official confirmation of the discovery of these elements took more than 10 years.

So, in February 2004, JINR and the Livermore National Laboratory received 115 elements. In addition, scientists have announced the discovery of 113 elements formed during the decay of the 115th element. However, the International Union of Pure and Applied Chemistry did not find the evidence presented to discover 113 elements sufficient.

115 and 117 elements received preliminary names ununpentium and ununseptium. 113 elements are likely to be called "Japan." By the way, this element was first discovered and named by researchers from Asia. The 118th element is tentatively named ununctium.

Now, after the official recognition of the discovery of these elements, the seventh period of the periodic table is filled.