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Atomic number is the number of protons in an atom. Mass number is the number of neutrons in an atom, and net charge describes how the protons and electrons balance out. Thank 107. Flag lesson. Tip: This isn't the place to ask a question because the teacher can't reply.
What zooms around the nucleus of an atom? Electrons Which one has a positive charge, a negative charge, and no charge? Protonâpositive; electronânegative; neutronâno charge. The charge on the proton and electron are exactly the same size but opposite. The same number of protons and electrons exactly cancel one another in a neutral atom. Note: The picture shows a simple model of the carbon atom. It illustrates some basic information like the number of protons and neutrons in the nucleus. It also shows that the number of electrons is the same as the number of protons.