Now this is a big one! I have spent hours trying different ways to add isotopes to this. I thought I would add some common isotopes and not let the user make any other atom. Then I ditched it and tried to just say not in data. Then I tried to reduce the number of elements then I thought that how many isotopes can I actually add? So Iooked up on how many isotopes exist of all known elements I found a study of NUBASE in 2022 with 3588 ground state isotopes in their website. It had a lot of detail. I have used clause to parse it into a json file and it has 25k lines. I have asked the shipwrights and they said it’s fine so I did it. So now I have each possible ground state isotope and its basic properties in my project so I just linked it to javascript and then decided I wanted an entire window dedicated to isotopes and as my project had been bad for so long so I redid the html and finally touched css. Didn’t take me too long it has become very easy to create basic cards after my last project. Then I created a few functions for the isotopes which basically act as a validator which I made previously for protons. Also I deleted a lot of my code. So as seen in the video, Isotopes are divided into stable, radioactive and invalid. Any isotope which my database doesn’t have does not exist in ground state which is way bigger of a scale I was thinking about so I am proud of it. Also the name and symbol have been changed as well. the css looks very bad as I just did it very fast so that it at least looks like it is real. Next is redoing the nucleus to increase the randomisation and maybe I am thinking of redoing the isotopes window and the UI. Mostly thinking of working on UI now but idk what I do tomorrow. Thanks for reading!!