Which phrase is an example of what electrostatic forces hold together?

Ag atoms and localized electrons in silver

Oxygen and hydrogen atoms in H2O

Ar atoms in argon gas

Cs4 and Cl - in CsCl

Cs + and Cl - in CsCl is an example of electrostatic forces that hold together.

Explanation:

The interaction that occurs between atoms that have an electric charge is called electromagnetic force. When the charges are at rest, the interaction between them is called electrostatic force. This force depends on the distance "r" between the atoms.

Depending on the sign of the charges that interact, electrostatic force can be attractive or repulsive. The electrostatic interaction between charges of the same sign is repulsive (two negative charges or two positive charges), while the interaction between charges of the opposite sign (a negative charge and a positive charge) is attractive. In the case of neutral charges against negative or positive charges, no force is generated.

Cs + and Cl - in CsCl is an example of electrostatic forces that hold together. In this example you have a positively charged atom (Cs₊) and a negatively charged atom (Cl₋). As they are opposite charges they will attract.