This chemistry video provides a basic introduction into how to draw lewis structures of common molecules such as Cl2, O2, OF2, CH4, NH3, H2O, C2H2, and N2H4. Every chemistry student has to learn how to draw Lewis Dot Structures. The key is to understand the steps and practice. Lewis Structures are important to learn because they help us predict: the shape of a molecule. How the molecule might react with other molecules. The physical properties of the molecule (like boiling point, surface tension, etc.). This chemistry video tutorial provides a basic introduction into drawing lewis dot structures but most importantly, it provides an explanation on how to calc. Search by Structure or Substructure. Upload a structure file or draw using a molecule editor. A Lewis electron dot diagram (or electron dot diagram or a Lewis diagram or a Lewis structure) is a representation of the valence electrons of an atom that uses dots around the symbol of the element. The number of dots equals the number of valence electrons in the atom.

Every chemistry student has to learn how to draw Lewis Dot Structures. The key is to understand the steps and practice.

Lewis Dot Structures

Chemistry Lewis Dot Structure Calculator

Lewis Structures are important to learn because they help us predict:

the shape of a molecule.
how the molecule might react with other molecules.
the physical properties of the molecule (like boiling point, surface tension, etc.).

That helps us understand and predict interactions with things like medicine and our body, materials used to make buildings and airplanes, and all sorts of other substances. Lewis structures don't tell us everything, but along with molecule geometry and polarity they are hugely informative.

Lewis Dot Chemistry

Search 100+ Lewis Structures on our site.
(Opens new window.)

Chemistry Lewis Dot Structure Calculator Online

Lewis Dot Structure Chemistry Worksheet

Click the Chemical Formula to see the Lewis Structure

Acetone	(C₃H₆O)
AsCl₃	(Arsenic Trichloride)
AsF₃	(Arsenic Trifluoride)
AsF₅	(Arsenic Pentafluoride)
AsF₆^-	(AsF₆^-)
AsH₃	(Arsenic Trihydride)
AsO₃^3-	(Arsenite Ion)
BBr₃	(Boron Tribromide)
BCl₃	(Boron Trichloride)
BF₃	(Boron Trichloride)
BF₄^-	(Tetrafluoroborate Ion)
BH₃	(Boron Hydride)
BH₄^-	(BH₄^-)
B(OH)₃	(B(OH)₃)
BeCl₂	(Beryllium Chloride)
BeF₂	(Beryllium Fluoride)
BeH₂	(Beryllium Hydride)
Br₂	(Bromine Gas or Elemental Bromine)
Br₃^-	(Tribromide Ion)
BrF	(Bromine Monofluoride)
BrF₂	(Bromine Difluoride)
BrCl₃	(Bromine Trichloride)
BrF₃	(Bromine Trifluoride)
BrF₅	(Bromine Pentafluoride)
BrO^-	(Hypobromite Ion)
BrO₂^-	(Bromite Ion)
BrO₃^-	(Bromate Ion)
C₂^2-	(Dicarbide Ion)
CBr₄	(Carbon Tetabromide)
CCl₄	(Carbon Tetachloride)
ClF	(Chlorine Monofluoride)
CF₂Cl₂	(Dichlorodifluoromethane)
CH₂Cl₂	(CH₂Cl₂)
CH₃^-	(CH₃^-)
CH₃Br	(CH₃Br)
CH₃Cl	(Chloromethane or Methyl Chloride)
CH₃CN	(Acetonitril or Methyl Cyanide)
CH₃COO^-	CH₃COO^-
CH₃COOH	(Acetic Acid)
CH₃F	(CH₃F)
CH₃NH₂	(Methylamine)
CH₃NO₂	(CH₃NO₂)
CH₃OCH₃	(Dimethyl Ether or Methoxymethane)
CH₃OH	(Methanol or Methyl Alcohol)
CH₄	(Methane)
C₂F₄	(C₂F₄)
C₂H₂	(Ethyne or Acetylene)
C₂H₂Br₂	(C₂H₂Br₂)
C₂H₂Cl₂	(C₂H₂Cl₂)
C₂H₄	(Ethene)
C₂H₆	(Ethane)
C₂H₆O	C₂H₆O
C₃H₆	(C₃H₆)
C₃H₈	(Propane)
C₄H₁₀	(Butane)
C₆H₆	(Isomers - including Benzene)
C₆H₁₂	(C₆H₁₂)
CHCl₃	(Chloromethane)
CH₂F₂	(Difluoromethane)
CH₂O	(Methanal or Formaldehyde)
CH₄O	(CH₄O)
Cl₂	(Chlorine Gas or Elemental Chlorine)
Cl₂CO	(Cl₂CO)
Cl₂O	(Dichlorine Monoxide)
Cl₃PO	(Phosphoryl Trichloride)
ClF₃	(Chlorine Trifluoride)
ClF₅	(Chlorine Tetrafluoride)
ClO^-	(Hypochlorite Ion)
ClO₂	(Chlorine Dioxide)
ClO₂^-	(Chlorite Ion)
ClO₃^-	(Chlorate Ion)
ClO₄^-	(Perchlorate Ion)
CO	(Carbon monoxide)
CO₂	(Carbon Dioxide)
CO₃^2-	(Carbonate Ion)
COCl₂	(COCl₂)
COF₂	(COF₂)
COH₂	(COH₂)
CN^-	(Cyanide Anion)
CS₂	(Carbon Disulfide)
F₂	(Fluorine Gas, Difluorine)
H₂	(Hydrogen Gas or Elemental Hydrogen)
H₂CO	(Formaldehyde or Methanal)
H₂CO₃	(Carbonic Acid)
H₂O	(Water or Dihydrogen monoxide)
H₃O⁺	(Hydronium Ion)
H₂O₂	(Hydroge