Final answer:
The electrostatic force between two electrons is repulsive, as they are like-charged particles. The rule is that like charges repel each other, while unlike charges attract. Electrostatic force is crucial in determining the structure and behavior of atoms and molecules.
Step-by-step explanation:
The type of electrostatic force that exists between two electrons is repulsive. According to Coulomb's law, the force between two point charges is directly proportional to the product of the charges and inversely proportional to the square of the distance between them. Since electrons have like charges (negative), the force between them is repulsive, meaning they push away from each other. This is an illustration of the general rule that like charges repel and opposite charges attract.
Filling in the blanks: The electrostatic force between like charges is repulsive, and the electrostatic force between opposite charges is attractive. The electrostatic force is a vector quantity and is expressed in units of newtons. It is responsible for the electromagnetic interactions in atoms and molecules, including both intramolecular and intermolecular forces. This force is much more significant compared to the gravitational force when it comes to subatomic particles.