GOB Chemistry

Learn the toughest concepts covered in your GOB - General, Organic, and Biological Chemistry class with step-by-step video tutorials and practice problems.

Atoms and the Periodic Table

Ions and the Octet Rule (Simplified)

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The Octet Rule states that main-group elements will generally form enough bonds to obtain 8 electrons in their valence shell.

The Octet Rule

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Ions and the Octet Rule (Simplified) Concept 1

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Ions and the Octet Rule (Simplified) Example 1

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Ions and the Octet Rule (Simplified) Example 2

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For a metal cation, first remove electrons from the highest energy level.

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Ions and the Octet Rule (Simplified) Example 3

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For a non-metal anion, add electrons to the orbital with available space.

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Problem

Determine the electron arrangement for the Cl ion.

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Problem

Determine the electron arrangement for the Al3+ ion.