Describe the relationship between the internuclear distance and the potential energy of the system during the formation of an $H_{2}$ molecule.

• A
  The potential energy decreases as the atoms approach each other, reaching a minimum at the equilibrium internuclear distance.
• B
  The potential energy increases continuously as the atoms approach each other.
• C
  The potential energy remains constant regardless of the internuclear distance.
• D
  The potential energy reaches a maximum at the equilibrium internuclear distance.