With the Building Atoms, Ions, and Isotopes app, explore the composition of the elements. Build atoms, ions, and isotopes by selecting appropriate numbers of protons, neutrons, and electrons. For reference, this app also includes atomic theory information and a periodic table that is interactive in the iPad version.
**iOS 9 Compatibility
**Minor Bug Fixes
Up to six family members will be able to use this app with Family Sharing enabled.