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She began reading off the names of the elements. "I know hydrogen and helium; what's tirfalddavas, the third one?" "Lithium," Tranter said. "The atomic weights aren't run out past the decimal point. Hydrogen's one plus, if that double-hook dingus is a plus sign; Helium's four-plus, that's right. And lithium's given as seven, that isn't right. It's six-point nine-four-oh.
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