User:BALDD29/sandbox19

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Pekka Pyykko's depiction of extended periodic table with unseptbium (172) just underneath Oganesson.

Unseptbium is temporary name of a hypothetical element in the extended periodic table; it has symbol Usb, atomic number 172 and unknown atomic mass. It's expected to be a noble gas just underneath element 118, Oganesson. Due to recent synthetic elements dying rapidly, the possibility of existence of unseptbium is low due to It's weight, unstability and the nucleus structure will decay quickly.