This is Beryllium. The pen is the electron shell. The inside circle is the nucleus.
Beryllium has... Atomic Number: 4 Symbol: Be Group: Alkaline Earth Metals Atomic Mass: 9.012182 atomic mass units Density: 1.848 grams per cubic centimeter Atomic Radius: 112 picometers Crystal Structure: Hexagonal Group (Vertical Row): 2 Period (Horizontal Row): 2 Standard State: Solid Electron Configuration: 1s2 2s2 Classification: Metal Ion: Be+
