Helium Atom Structure - Simple Atomic Model Explained #3301729 (License: Personal Use)

This schematic depicts a neutral helium-4 atom, featuring a central nucleus composed of two positively charged protons (red) and two neutral neutrons (blue), orbited by two negatively charged electrons (gray) in the first electron shell. The illustration emphasizes the simplest stable noble gas configuration, with balanced charge and full valence shell. It serves as a foundational model for understanding atomic structure and periodic table trends.

Used in educational contexts-middle school to undergraduate chemistry courses-to introduce atomic theory, subatomic particles, and elemental properties. Matches user intent for visual learning, homework help, or quick reference on helium’s composition.