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Moving from left to right across a row of the periodic table, which of the following values increases by exactly one from element to element? A. isotope number B. atomic number C. atomic mass unit D. mass number
Moving from left to right across a row of the periodic table, the atomic number (which is the number of protons in the nucleus of the atom) increases by exactly one from element to element.
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Asked 8/5/2012 11:19:12 PM
Updated 7/16/2015 3:24:30 PM
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This answer has been confirmed as correct and helpful.
Edited by Janet17 [7/16/2015 3:24:28 PM], Confirmed by Janet17 [7/16/2015 3:24:30 PM]
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