Answer:

b.molecule

Explanation:

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15.) What do you call an atom or molecule with a net charge, either positive or negative ?

C.-Ion

-Any atom or molecule with a net charge, either positive or negative, is known as an ion. ... The positive electric charge of a proton is equal in magnitude to the negative charge of an electron; therefore, the net electric charge of an ion is equal to its number of protons minus its number of electrons.