ATOMS An atom is composed of protons, neutrons, and electrons. A proton has a positive charge (represented by +1), a neutron has no charge, and an electron has a negative charge (–1). Two simple models of atoms are shown below.
a. How many protons does the atom in figure (a)have? How many electrons?
b. What is the net charge of the atom in figure (a)?
c. How many protons does the atom in figure (b) have? How many electrons?
d. What is the net charge of the atom in figure (b)?
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