Tetrahedral Definition - Chemistry Glossary

Tetrahedral shape
A tetrahedral molecule has a central atom with four bonds, forming a tetrahedron.

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Tetrahedral is a descriptor of the geometry of a molecule in which a central atom forms four bonds which are directed toward the corners of a regular tetrahedron. Tetrahedral geometry forms a solid with four vertices and four sides, all of which are equilateral triangles.

Examples of tetrahedral molecules include methane (CH4) and the ammonium ion (NH4+). The bond angle for both methane and ammonium is 109.4˚.

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Helmenstine, Anne Marie, Ph.D. "Tetrahedral Definition - Chemistry Glossary." ThoughtCo, Aug. 28, 2020, thoughtco.com/tetrahedral-definition-chemistry-glossary-602124. Helmenstine, Anne Marie, Ph.D. (2020, August 28). Tetrahedral Definition - Chemistry Glossary. Retrieved from https://www.thoughtco.com/tetrahedral-definition-chemistry-glossary-602124 Helmenstine, Anne Marie, Ph.D. "Tetrahedral Definition - Chemistry Glossary." ThoughtCo. https://www.thoughtco.com/tetrahedral-definition-chemistry-glossary-602124 (accessed January 22, 2021).