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What is the mass of an element with 15 protons, 13 electrons, and 11 neutrons? *
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The agent of mechanical weathering in which rock is worn away by the grinding action of other rock particles is call
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Use this information to determine the number of calends electrons in the atoms. which of the following correctly compares the stability of the two atoms? a) both are unreactive b) both are highly reactive c) a is unreactive and d is reactive d) a is reactive and d is unreactive
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The number to the right of an element's symbol (ex. c-12) identifies the of an isotope.
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What is the mass of an element with 15 protons, 13 electrons, and 11 neutrons? *...
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