1. how are electric charges distributed within the atom?
a. positive and negative charges are distributed evenly.
b. positive charges are concentrated in the nucleus, negative charges surround
the nucleus.
c. negative charges are concentrated in the nucleus, positive charges surround
the nucleus.
d. both positive and negative charges are concentrated in the nucleus.

B

Explanation:

Protons of atoms are the atomic particles with a positive charge while electrons bear a negative charge. Protons are found in the nucleus together with neutrons (that have no charge). They are held together by strong nuclear forces that overcome the repulsive forces between the positive charges in the nucleus. The electrons orbit around the nucleus and are kept in orbit by the electromagnetic attraction of the positive nucleus.  

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