Atomic Structure

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An interactive tool designed to help you develop an understanding of how Lewis Dot Structures are created.

A brief history and time-line for the study of the Atom

Comprehensive and detailed explanations of how quantum numbers work, complete with pictures of orbitals, and diagrams illustrating the order of filling subshells.

Chapter 6 - Standard Esthetics

Explains most of the periodic trends in terms of shielding of the nucleus by the inner shells of electrons. Includes a discussion of size (radius), ionization energy, electron affinity, electronegativity, metallic character, reactivity and common charges.

Describes the molecular geometry of various chemical compounds, giving the general description of each and names of the shapes.