1 - VSEPRplex 1.1.7 VSEPRplex (pronounced "ves-per-plex") is an interactive chemistry package that helps students visualize and understand molecular geometry. While building and exploring their own 3-D structures, students encounter the shapes and properties of small covalent molecules. VSEPRplex was designed for use in senior high school and college chemistry courses. License: Time-limited Trial OS: Mac OS Size: 90 KB