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Updated: May 10, 2025
One electron shell, one electron in the outer shell," Tranter told her. "Helium's period one, too, but it has the outer only electron shell full, so it's in the group of inert elements." "Trav, Trav. Trav's the first month of the year. And helium's Trav, Yenth; Yenth is the eighth month." "The inert elements could be called Group Eight, yes.
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