What is the approximate electrostatic force between two protons each having a charge of +1.6 x 10-19 C separated by a distance of 1.0 × 10–6 meter? A)
2.3 × 10–16 N and repulsive
B)
2.3 × 10–16 N and attractive
C)
9.0 × 1021 N and repulsive
D)
9.0 × 1021 N and attractive

In atoms, the electron carries a negative elementary or unit charge; the proton carries a positive charge. the two types of charge are equal and opposite. in an atom of matter, an electrical charge occurs whenever the number of protons in the nucleus differs from the number of electrons surrounding that nucleus.