Skip to main content
[ "article:topic", "Fundamental", "Ophardt", "NonPolar", "Molecular Geometry", "trigonal bipyramidal", "sp3d", "Hydronium", "Ammonia", "Sulfite", "orbitals", "showtoc:no", "tetrahedral electron pair", "Trigonal Pyramid", "tetrahedral electron pair geometry" ]
Chemistry LibreTexts

Trigonal Bipyramidal Molecular Geometry

  • Page ID
    691
  •   AX5 AX5
    Shape: trigonal bipyramidal
      Steric Number: 5
      Lone Pairs: 0
      Polar/NonPolar: NonPolar
      Hybridization: sp3d
      Examples: PCl5, SbF5

    NOTES: This molecule is made up of 5 sp3d hybrid orbitals. Three orbitals are arranged around the equator of the molecule with bond angles of 120o. Two orbitals are arranged along the vertical axis at 90o from the equatorial orbitals. The shape of the orbitals is trigonal bipyramidal. Since there is an atom at the end of each orbital, the shape of the molecule is also trigonal bipyramidal.