Chemistry / Unit 6 Chem 1053 short lesson, about 20 seconds
Six-Domain Geometry: Octahedral
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The idea
A central atom with six electron domains and no lone pairs adopts an octahedral geometry, with every position equivalent at 90° from its neighbors.
In practice
Sulfur hexafluoride, SF6, six bonding domains and no lone pairs, is octahedral.
Where people slip
Don't picture six domains as a flat hexagon with 120° angles; the octahedron is three-dimensional, with all six positions genuinely 90° apart.
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