- Point group
- C3v — A C3 rotation axis and 3 vertical mirror planes that contain it.
- Order
- 6
- Operations
- E, 2C₃, 3σᵥ
- Shape
- Trigonal pyramidal
- Atoms
- 4 (I, O × 3)
Symmetry elements of IO₃⁻
- C₃ — through I, perpendicular to the O₃ plane
- σᵥ (1) — contains the C₃ axis and one I–O bond
- σᵥ (2) — contains the C₃ axis and one I–O bond
- σᵥ (3) — contains the C₃ axis and one I–O bond
Structure
- I–O 1.81 Å
- O–I–O 98°
- One lone pair on I; charge −1
