Lewis Structure Generator

Look up Lewis structures and Lewis dot structures for common molecules and ions, including CO2, H2O, NH3, CH4, SO2, nitrate, carbonate, and HCN.

Formula Search

Find a Lewis structure

Search by formula or English name. Examples: CO2, carbon dioxide, water, nitrate ion.

CO₂ H₂O CH₄ NH₃ SO₂ NO₃^-CO₃^2-HCN

Popular Lewis Structures

CO₂ Carbon dioxide H₂O Water CH₄ Methane NH₃ Ammonia SO₂ Sulfur dioxide NO₃^- Nitrate ion CO₃^2- Carbonate ion HCN Hydrogen cyanide

About Lewis Structure Generator

This site is a curated Lewis structure library for common chemistry formulas. Each page includes a diagram, valence electron count, formal charges, VSEPR geometry, polarity, and common mistakes.

Search accepts formulas and English names, including CO2 (carbon dioxide), H2O (water), NH3 (ammonia), CH4 (methane), SO2 (sulfur dioxide), nitrate ion, carbonate ion, and HCN (hydrogen cyanide).