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238 represents the Atomic Mass of Uranium. Uranium's standard isotope (which is U-238) is composed of 92 Protons (+ charges) and 146 Protons (- charges). This tells you that a standard Uranium atom is negatively charged.
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∙ 12y agoThis answer is:
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∙ 10y ago238U-206Pb is a method used to determine the dates of ancient rock and sediment. The U stands for Uranium, while the Pb stands for lead. Scientists calculate how quickly these known chemicals break down, which then gives them a rough calculation of how old the rock is.
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∙ 16y agoAn Isotope of Uranium.
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