Hi,
firstly, thanks for creating this really nice App and all your work.
One thing that would be nice to see in the detail view of an Isotope, is the Configuration of the Electron Orbitals and maybe other details connected to this.
A simple version with just as text would already be cool (for example Oxygen: 1s^2 2s^2 2p^4), but if one wants to make it really on the top a displaying it also as a Diagram with the energy on the Vertical axis would be cool.
Thanks again for your work.