A system of 8 electrons, 18 protons, and 4 neutrons has a net charge of

a. 16.0 × 10^-19 C.
b. –16.0 × 10^-19 C.
c. 22.4 × 10^-19 C.
d. 10.0 × 10^-19 C.
e. –22.4 × 10^-19 C.


a

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