We know there is 118 elements, from Hydrogen to Ogannesson, but what about 172 elements? There is three periodic tables: 1st: 118 elements, all we know. 2nd: 142 elements (Wikipedia version), Ununennium, Unbinilium etc... 3rd: 172 elements (up to Unseptbium, by Pekka Pyykkö)
It would be cool, it should came!
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