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Asingle atom of an element has 21 neutrons, 20 electrons, and 20 protons. which element is it? ok o z
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When curium-242 is bombarded with an alpha particle, two products are formed, one of which is a nudge on. what is the other product
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How many moles is 14.5 cm^3 of platinum? the density of platinum is 21.45 g/cm^3.
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