Chemistry, 04.12.2020 01:00 jonathanvega424

The_ of an element is the number of element.*
of an atom of that
atomic mass, electrons in the nucleus
mass number, neutrons in the nucleus
mass number, protons plus neutrons in the outermost energy level
atomic number, protons in the nucleus

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The___ of an element is the number of element.*
__ of an atom of that
atomic mass, elec...