MolDraw › 3D molecule models › Ozone 3D model
Ozone molecule model (O3)
Ozone is a bent triatomic form of oxygen with two equivalent O–O bonds. They are equal because of resonance between two Lewis structures. In the stratosphere it absorbs harmful UV light.
Drag to rotate · pinch or scroll to zoom. 3D coordinates: PubChem conformer (CID 24823).
Ozone at a glance
| Formula | O3 |
|---|---|
| Molar mass | 47.998 g/mol |
| IUPAC name | ozone |
| Atoms / bonds | 3 / 2 |
| H-bond donors / acceptors | 0 / 2 |
| XLogP3 | -1.7 |
| SMILES | [O-][O+]=O |
| PubChem CID | 24823 |
What the 3D model of Ozone shows
The model contains 3 atoms (3 heavy atoms and 0 hydrogens) joined by 2 bonds; in ball-and-stick mode every stick is one bond, and double or aromatic bonds are drawn as multiple sticks. Switch to space-filling to see the molecule as its electron cloud, scaled to van der Waals radii: this is the shape other molecules actually "feel". It can donate 0 and accept 2 hydrogen bonds, and its PubChem XLogP3 of -1.7 means it is very water-loving (hydrophilic). Its topological polar surface area is 41.1 Ų.
Shape and bond angles
| Atom(s) | Geometry / hybridisation | Angles & lengths |
|---|---|---|
| central O | Bent (AX₂E), trigonal planar electron geometry, sp² | O–O–O 116.8°; both O–O 127.8 pm (between a single and a double bond) |
Is Ozone polar?
Slightly polar (dipole about 0.53 D): the central O carries a partial positive charge and the shape is bent.
Elemental composition of O3
| Element | Atoms | Mass (g/mol) | Mass % |
|---|---|---|---|
| Oxygen (O) | 3 | 47.997 | 100.00% |
Calculated from IUPAC standard atomic weights. Check any formula with the molar mass calculator.
Uses of ozone
- Water and air disinfection
- Bleaching and odour control
- Stratospheric ozone layer absorbs UV-B and UV-C
Interesting facts
- The two O–O bonds are identical, a classic example of resonance.
- Ground-level ozone is a pollutant formed when sunlight acts on NOₓ and hydrocarbons.
- CFCs destroy stratospheric ozone through chlorine radical chain reactions.
Drawing structures for your notes? MolDraw is a free online chemical structure editor for molecules, reactions and lab diagrams.
Open MolDraw editorFrequently asked questions
What is the shape of ozone?
Bent, with an O–O–O angle of about 117°, because the central oxygen has two bonding domains and one lone pair.
Why are both bonds in ozone the same length?
Resonance: the double bond is spread over both O–O positions, so each has a bond order of 1.5.
What is the chemical formula and molar mass of ozone?
Ozone is O3 with a molar mass of 47.998 g/mol (PubChem CID 24823). It contains 3 atoms: 3 oxygen.
What is the IUPAC name of Ozone?
The PubChem-computed IUPAC name is ozone.
How do I make a model of Ozone?
Rotate the interactive model above to see how its 3 atoms connect, then copy it with a ball-and-stick kit: use the CPK colours shown (carbon grey or black, hydrogen white, oxygen red, nitrogen blue). For a school project, foam balls and toothpicks work well.