Aluminum Atom Structure - Bohr Model Diagram Explained #16787 (License: Personal Use)

The diagram depicts a simplified Bohr model of a neutral aluminum atom (atomic number 13), with a central nucleus labeled “Al” surrounded by three concentric circular orbits representing electron shells. The innermost shell holds 2 electrons, the second holds 8, and the outermost (valence) shell contains 3 electrons-matching aluminum’s ground-state electron configuration of 1s² 2s² 2p⁶ 3s² 3p¹.

Used in educational contexts such as high school or introductory college chemistry materials to teach atomic structure, electron shells, and periodic table trends; supports user intent to understand how elements like aluminum organize their electrons.