Atom Diagrams: Electron Configurations of the Elements
Electron Shells – Mr Tarrant's physbang 'blog
Willapa World - Electron Shells, an introduction: Oxygen "Electrons are arranged in different shells around the nucleus. Each successive shell can only hold a certain number of electrons. The innermost shell is
Electron Shell - Definition & Number of Electrons in Each Shell
Electron shells and orbitals
See the Electron Configuration Diagrams for Atoms of the Elements | Potassium atom, Atom diagram, Atomic structure
How are the electron shells labeled? - Quora
Nondestructive Evaluation Physics : Atomic Elements