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Acetone molecule model (C3H6O)

Acetone (propan-2-one) is the simplest ketone. The central carbonyl carbon is trigonal planar and sp², flanked by two tetrahedral methyl groups. The polar C=O makes acetone an excellent solvent.

Quick answer: Acetone is C3H6O, molar mass 58.08 g/mol. Trigonal planar, sp² around C=O carbon. Polar (about 2.9 D) because of the C=O bond, but it has no O–H, so it accepts hydrogen bonds without donating them.

Drag to rotate · pinch or scroll to zoom. 3D coordinates: PubChem conformer (CID 180).

Acetone at a glance

FormulaC3H6O
Molar mass58.08 g/mol
IUPAC namepropan-2-one
Atoms / bonds10 / 9
H-bond donors / acceptors0 / 1
XLogP3-0.1
SMILESCC(=O)C
PubChem CID180
2D structural formula of Acetone (C3H6O)
2D structure (skeletal formula) · Draw it in MolDraw

What the 3D model of Acetone shows

The model contains 10 atoms (4 heavy atoms and 6 hydrogens) joined by 9 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 1 hydrogen bonds, and its PubChem XLogP3 of -0.1 means it is fairly balanced between water and fat solubility. Its topological polar surface area is 17.1 Ų.

Shape and bond angles

Atom(s)Geometry / hybridisationAngles & lengths
C=O carbonTrigonal planar, sp²C–C–C ≈ 117°, C–C=O ≈ 121.5°
CH₃ carbonsTetrahedral, sp³≈ 109.5°

Is Acetone polar?

Polar (about 2.9 D) because of the C=O bond, but it has no O–H, so it accepts hydrogen bonds without donating them.

Elemental composition of C3H6O

ElementAtomsMass (g/mol)Mass %
Carbon (C)336.03362.04%
Hydrogen (H)66.04810.41%
Oxygen (O)115.99927.55%

Calculated from IUPAC standard atomic weights. Check any formula with the molar mass calculator.

Uses of acetone

Interesting facts

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Frequently asked questions

What is the shape of acetone?

The carbonyl carbon is trigonal planar (sp², about 120°) and the two methyl carbons are tetrahedral.

Is acetone polar?

Yes. The C=O bond gives a large dipole (about 2.9 D), so acetone dissolves both polar and many non-polar substances.

What is the chemical formula and molar mass of acetone?

Acetone is C3H6O with a molar mass of 58.08 g/mol (PubChem CID 180). It contains 10 atoms: 3 carbon, 6 hydrogen, 1 oxygen.

What is the IUPAC name of Acetone?

The PubChem-computed IUPAC name is propan-2-one.

How do I make a model of Acetone?

Rotate the interactive model above to see how its 10 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.

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