What can account for the increased potential energy when atoms are close together?

question options:

a. their opposite charges

b. electron repulsion

c. the breaking of a bond

d. proton to proton repulsion

The correct answer is D.

Explanation:

The increase in potential energy when atoms are closer and closer is due to the force of repulsion Proton by Proton. The potential energy that a molecule may have will be due to the forces of attraction and repulsion with other molecules in its environment. The greater the force of repulsion, the greater the potential energy between the atoms.

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