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AP Chemistry
2.2 Intramolecular Force and Potential Energy
IntermediateMCQGraphicalConceptual25k
A line graph plots potential energy in \(\text{kJ/mol}\) on the vertical axis against internuclear distance in \(\text{pm}\) on the horizontal axis. A horizontal dotted line represents zero potential energy. Two curves, labeled Curve 1 and Curve 2, start at very high positive potential energy at small internuclear distances, decrease sharply to a minimum below zero, and then rise asymptotically toward zero at large distances. Curve 1 is drawn as a solid black line with its minimum at a shorter internuclear distance and a deeper potential energy value. Curve 2 is drawn as a dashed black line with its minimum at a greater internuclear distance and a shallower potential energy value. No gridlines, shading, or additional annotations appear.
Potential energy as a function of internuclear distance for \(\text{N}_2\) and \(\text{O}_2\).
The potential energy curves for diatomic nitrogen, \(\text{N}_2\), and diatomic oxygen, \(\text{O}_2\), are represented in the graph as a function of internuclear distance.

Which of the following correctly identifies the curve corresponding to \(\text{N}_2\) and provides the valid justification?

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