Question

in an electrically neutral atom, the number of
protons equals the number of neutrons.
protons equals the number of electrons.
neutrons equals the number of electrons.
done

Explanation:

In an electrically neutral atom, the positive charge of protons (+1 each) must balance the negative charge of electrons (-1 each). Neutrons have no charge (0). So for neutrality, the number of protons (positive charges) must equal the number of electrons (negative charges) to cancel out. Protons and neutrons don't need to be equal, and neutrons (neutral) don't relate to electron count for charge balance.

Answer:

B. protons equals the number of electrons.