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Line 1: − Atomic number is the number of proton's in the atom's nucleus. In many representations of the [[Periodic Table of the Elements]] this number is placed either above the element's symbol or in the upper right hand corner.+
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The atomic number is the number of protons in an atom's nucleus. In many representations of the [[Periodic Table of the Elements]] this number is placed either above the element's symbol or in the upper right hand corner.
[[Category:Chemistry]]
[[Category:Chemistry]]