Answers

2015-12-15T19:32:27+08:00
An element is determined by the number of protons it has in its nucleus. Which they call Atomic Number. For example; Uranium has an atomic number of 92, in which case that element is the only one with 92 protons in its nucleus.
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2015-12-16T11:19:54+08:00
An element is determined by the # of atoms,electrons,neutrons,and protons..
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