Build structures on an interactive canvas, follow a guided step-by-step tutor, and explore resonance and 3D VSEPR geometry, all backed by a rigorous engine that explains every electron it places.
Live example: water
Lines are shared electron pairs, and the cyan dots are oxygen's lone pairs. Those lone pairs repel harder than the bonds, bending water to about 104.5 degrees.
From a first octet to expanded-octet edge cases, every tool shares one validated chemistry engine.
No black boxes. Electron counts, central-atom choices, formal charges, and octet exceptions come with the reasoning, not just the result.
Formal charge is computed exactly as valence minus nonbonding minus half the bonding electrons, then validated so charges always sum to the molecular charge and the electrons always balance.
Classes, assignments, auto-grading with teacher overrides, misconception analytics, and a projector-friendly presentation mode.
No installs, no textbook licenses. Open the generator and type a formula, the engine handles H₂O to XeF₄ and explains every step in between.
Two structures side-by-side: bonding, charges, molecular geometry.