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the claim
Axial and equatorial lone pairs in trigonal bipyramidal geometry experience different steric repulsion.
the verdict
SUPPORTED
the evidence backs this
refutedsupported
the weight of evidence
2 sources for · 0 against

According to VSEPR theory, axial and equatorial positions in trigonal bipyramidal geometry experience different steric pressures because axial positions have more close 90-degree neighboring interactions.

Evidence for · 2
Wikipedia: Trigonal bipyramidal molecular geometry
cited by 0
Reference article covering this claim directly
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The analysis

Judged against the evidence record for claims of this kind.

More for · 1
OpenAIRE: BOND LENGTHS AND BOND ANGLES IN OCTAHEDRAL, TRIGONAL- BIPYRAMIDAL, AND RELATED MOLECULES OF THE NON-TRANSITION ELEMENTS
1961 · cited by 0
Discusses Pauli exclusion principle repulsions explaining bond length differences in trigonal-bipyramidal molecules.
Everything we examined (18)
  1. Wikipedia: Trigonal bipyramidal molecular geometryreferencesupports
  2. Wikipedia: VSEPR theoryreferenceno side takennot shown: read and judged not to bear on this claim
  3. OpenAIRE: Molecular structure of bis(dimethylamino)difluorosulfurane. The first x-ray crystal structure of a fluorosulfuranepeer-reviewedno side takennot shown: read and judged not to bear on this claim
  4. OpenAIRE: BOND LENGTHS AND BOND ANGLES IN OCTAHEDRAL, TRIGONAL- BIPYRAMIDAL, AND RELATED MOLECULES OF THE NON-TRANSITION ELEMENTSpeer-reviewedsupports
  5. OpenAIRE: Conformationally induced and conjugatively amplified doubly degenerate uneven sulfuranespeer-reviewedno side takennot shown: read and judged not to bear on this claim
  6. OpenAIRE: The crystal and molecular structure of acetato(2-phenylazophenyl-C,N′)tellurium(II) and (2-phenylazophenyl-C,N′)thiocyanatotellurium(II)peer-reviewedno side takennot shown: read and judged not to bear on this claim
  7. OpenAIRE: The crystal and molecular structure of dimethyldithiocarbamato-2-(2-quinolinyl)phenyltellurium(II)peer-reviewedno side takennot shown: read and judged not to bear on this claim
  8. OpenAIRE: Synthesis and characterization of an N-coordinated amidate copper(II) complex of deprotonated N-(2,6-diisopropylphenyl)-2-(bis-(2-pyridylmethyl))aminoethanamidepeer-reviewedno side takennot shown: read and judged not to bear on this claim
  9. NASA Technical Reports Server: Buckling of an equatorial segment of a spherical shell loaded by its own weightprimary-datano side takennot shown: read and judged not to bear on this claim
  10. NASA Technical Reports Server: Equatorial patterns of an axially-slotted cylinder coated with a critically dense plasma.primary-datano side takennot shown: read and judged not to bear on this claim
  11. NASA Technical Reports Server: VHF radar and rocket observations of equatorial spread F on Kwajaleinprimary-datano side takennot shown: read and judged not to bear on this claim
  12. NASA Technical Reports Server: A GCM Recent History of Northern Martian Polar Layered Deposits: Contribution from Past Equatorial Ice Reservoirsprimary-datano side takennot shown: read and judged not to bear on this claim
  13. NASA Technical Reports Server: Aperture radiation from an axially slotted elliptical conducting cylinder using geometrical theory of diffraction.primary-datano side takennot shown: read and judged not to bear on this claim
  14. ACS Materials Au: Pressure-Induced Chemical Bonding Effects on Lattice and Magnetic Instabilities in Antiferromagnetic Insulating CaMn 2 Sb 2peer-reviewedno side takennot shown: read and judged not to bear on this claim
  15. Angewandte Chemie (International Edition): Interplay Between Stereochemically Active Lone Pair Repulsions, Sigma Hole Interactions, and Delocalized Redox Processes in Topochemical Fluoride‐Ion Insertionpeer-reviewedno side takennot shown: read and judged not to bear on this claim
  16. Chemical Science: Experimental determination of the magnetic anisotropy in five-coordinated Co( II ) field-induced single molecule magnetspeer-reviewedno side takennot shown: read and judged not to bear on this claim
  17. OSTI: Orthorhombic Structures as Inorganic Halide Perovskite Models for High-Throughput DFT Investigationspeer-reviewedno side takennot shown: read and judged not to bear on this claim
  18. Advanced Materials: Lifting Triplet Degeneracy Through Organic‐Cation Driven Structural Perturbation to Modulate Luminescence of Sb 3+ ‐Doped Double Perovskitepeer-reviewedno side takennot shown: read and judged not to bear on this claim
The paper trail · every fact has a biography
first checked05 Aug 2026
judged → SUPPORTED · 6305 Aug 2026
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