Electron configuration a brief look
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Chemistry 112 Chapter 5. Electron Configuration A Brief Look. Mr. McIsaac Carleton North High School. Electron Arrangement (Energy Levels, Sublevels, Orbitals). Electrons travel around the nucleus at certain distances, called energy levels .

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Electron Configuration A Brief Look

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Electron configuration a brief look

Chemistry 112Chapter 5

Electron ConfigurationA Brief Look

Mr. McIsaac

Carleton North High School


Electron arrangement energy levels sublevels orbitals

Electron Arrangement(Energy Levels, Sublevels, Orbitals)

  • Electrons travel around the nucleus at certain distances, called energy levels.

  • Inside each energy level, there are sublevels; the number of sublevels is equal the number of the energy level:

    • 1st energy level has 1 sublevel (s)

    • 2nd energy level has 2 sublevels (s, p)

    • 3rd energy level has 3 sublevels (s, p, d)

    • 4th energy level has 4 sublevels (s, p, d, f)

    • 5th energy level has 5 sublevels (s, p, d, f, g)


Electron arrangement cont

Electron Arrangement (cont.)

  • Inside each sublevel, there are orbitals –specific regions/areas inside the e cloud where individual e’s exist.

  • An orbital may be empty, or may hold 1 or 2 e’s. Any orbital can hold a maximum of 2 e’s.

  • An outer level (valence level) can hold a maximum of 8 e’s. So, an outer level has a maximum of 4 orbitals.


Electron arrangement cont1

Electron Arrangement (cont.)

  • Stated another way, an outer level has a maximum of 2 sublevels (s, p).

  • An s sublevel has 1 orbital; a p sublevel has 3 orbitals. Total = 4 orbitals = 8 e’s (2 per orbital).

  • Valence electrons exist in these outer 4 orbitals.


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