Lewis structures, worked out
Pick a molecule and get the diagram, the electron count, the formal charges, the shape, the bond angle, the hybridization and the polarity verdict. Every number on this site is computed from the molecular formula when the page is built.
All 40 molecules
- CO2 Carbon dioxide
linear · nonpolar - SO2 Sulfur dioxide
bent · polar - H2O Water
bent · polar - HCN Hydrogen cyanide
linear · polar - NO2 Nitrogen dioxide
bent · polar - CH4 Methane
tetrahedral · nonpolar - CO Carbon monoxide
linear · polar - N2 Nitrogen
linear · nonpolar - O3 Ozone
bent · polar - O2 Oxygen
linear · nonpolar - SO3 Sulfur trioxide
trigonal planar · nonpolar - BF3 Boron trifluoride
trigonal planar · nonpolar - C2H2 Acetylene
linear · nonpolar - C2H4 Ethylene
trigonal planar · nonpolar - CH2O Formaldehyde
trigonal planar · polar - H2S Hydrogen sulfide
bent · polar - NH3 Ammonia
trigonal pyramidal · polar - XeF4 Xenon tetrafluoride
square planar · nonpolar - CCl4 Carbon tetrachloride
tetrahedral · nonpolar - CH3OH Methanol
tetrahedral · polar - SF6 Sulfur hexafluoride
octahedral · nonpolar - N2O Nitrous oxide
linear · polar - PCl5 Phosphorus pentachloride
trigonal bipyramidal · nonpolar - C2H6 Ethane
tetrahedral · nonpolar - H2O2 Hydrogen peroxide
bent · polar - PH3 Phosphine
trigonal pyramidal · polar - CHCl3 Chloroform
tetrahedral · polar - Cl2 Chlorine
linear · nonpolar - F2 Fluorine
linear · nonpolar - HCl Hydrogen chloride
linear · polar - HNO3 Nitric acid
trigonal planar · polar - Br2 Bromine
linear · nonpolar - CH3Cl Chloromethane
tetrahedral · polar - H2SO4 Sulfuric acid
tetrahedral · polar - N2H4 Hydrazine
trigonal pyramidal · polar - C6H6 Benzene
trigonal planar · nonpolar - NO Nitric oxide
linear · polar - SiCl4 Silicon tetrachloride
tetrahedral · nonpolar - H3PO4 Phosphoric acid
tetrahedral · polar - I2 Iodine
linear · nonpolar
Nothing matches that. Try a formula like CO2, a shape like bent, or polar.
What gets calculated
Lewis structures are not a matter of opinion - they fall out of arithmetic. Count the valence electrons the atoms bring, work out which atom is central, spend the electrons on bonds and lone pairs, and check the formal charges. This site runs that procedure for every molecule listed above, enumerates every bond arrangement the electron count allows, and scores them the way a chemistry course scores them.
That means the diagram, the bond angle and the polarity verdict on each page come from the same calculation a marker would run by hand. More on how it works.