Acknowledgements

• Element properties in src/lib/element-data.yml were combined from Bowserinator/Periodic-Table-JSON under Creative Commons license and robertwb/Periodic Table of Elements.csv (unlicensed).
• Thanks to Images of Elements for providing photos of elemental crystals and glowing excited gases.
• Thanks to @kadinzhang and their Periodicity project [code] for the idea to display animated Bohr model atoms and inset a scatter plot into the periodic table to visualize the periodic nature of elemental properties.