Final answer:
Software used to draw one-dimensional potential energy surfaces (PES) including vibrational energy levels is often a computational chemistry program capable of visualizing energy variation with molecular configurations. Energy-level diagrams and PES are essential tools for understanding a system's dynamical behavior, and VESPR is used for analyzing molecular geometry.
Step-by-step explanation:
The software used to draw one-dimensional potential energy surfaces (PES) including vibrational energy levels is typically a computational chemistry or molecular modeling program. These programs can calculate and visualize the PES for molecules by showing the energy variation with different configurations. The PES representation can aid in understanding the vibrational transitions and energy level spacing.
For example, when studying a guitar string, the PES can help visualize the energy stored in the system as a function of deformation of the string. Similarly, in the context of molecular physics, an energy-level diagram can display the various energy states accessible to an electron in different orbitals. A potential energy diagram and an energy-level diagram are tools that facilitate an understanding of the dynamical behavior of a system.
It is worth mentioning that while analyzing molecular geometry, the Valence Shell Electron Pair Repulsion (VESPR) model is used. This model involves drawing the Lewis structure, determining the electron group arrangement to minimize repulsions, assigning an AXmEn designation, and describing the molecular geometry based on these analyses.