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The Chemical Foundation of Life
Atoms, Isotopes, Ions, and Molecules
Biology Textbooks Boundless Biology The Chemical Foundation of Life Atoms, Isotopes, Ions, and Molecules
Biology Textbooks Boundless Biology The Chemical Foundation of Life
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Concept Version 9
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Electron Shells and the Bohr Model

Bohr diagrams

Bohr diagrams

Bohr diagrams indicate how many electrons fill each principal shell. Group 18 elements (helium, neon, and argon are shown) have a full outer, or valence, shell. A full valence shell is the most stable electron configuration. Elements in other groups have partially-filled valence shells and gain or lose electrons to achieve a stable electron configuration.

Source

    Boundless vets and curates high-quality, openly licensed content from around the Internet. This particular resource used the following sources:

    "OpenStax College, Atoms, Isotopes, Ions, and Molecules: The Building Blocks. October 16, 2013."
    http://cnx.org/content/m44390/latest/Figure_02_01_06.png OpenStax CNX CC BY 3.0.

Related Terms

  • octet rule
  • electron shell
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