An ion is an atom that has
A. a net negative charge.
B. a different number of neutrons from the number of protons.
C. a net negative or positive charge, with the number of electrons different from the number of protons.
D. the same number of electrons as it does protons.
E. a net positive charge.
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C. a net negative or positive charge, with the number of electrons different from the number of protons.
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