Element Spheres - Noble Gases

I have taken it upon myself to create a set of what I'm calling, "Element Spheres." They are educational manipulatives representing the different elements found on the Periodic Table and how they can be bonded with other elements. Each sphere is sized accordingly based on its relative atomic mass, possess holes based on their electron configuration/ability to link/bond, and are labeled with their atomic symbols.

In this first collection, we have all the known Noble Gases: Helium, Argon, Neon, Krypton, Xenon, Radon, and Oganesson.