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I was quite away for the last two months, as mentioned in the post I wrote yesterday. This is the reason why I didn't comment much recently ;)
Fun fact, I remember having written on Steem about the confirmation of the element 118 two years ago (together with the elements 113, 115 and 117 that were confirmed at the same moment). You can check here if interested ;)
RE: The History of Mendeleev and the development of the Periodic Table.