what is atomic number and atomic mass
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In an uncharged atom , the atomic number is also equal to the number of electrons .The atomic number Z should not be confused with the mass number, A which is the number of nucleous, the total number of protons and neutrons in the nucleus of an atom ..
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Atomic number is the number of protons or electrons in an atom.
Atomic mass is the mass of one atom of that element.
Explanation:
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