3D Lewis Structures · Electron Builder Lab

Build Lewis electron maps and transform them into rotatable 3D molecular geometries.

Interactive mathematics

Highlighted caption & live values

Molecule

Valence electrons

Status

Current change

Structure check

Visual step

Learn by exploring

1 / 4

A Lewis structure maps valence electrons with dots for lone electrons and lines for shared bonding pairs.

1 Count electrons2 Build skeleton3 Complete octets4 Check and view 3D

One action → one observation → one reason. Move through the stages slowly and use the electron audit to explain every change.

Experiment

Molecule preset

Build step

Rotation angle

Predict total electrons

Keep the audit in the caption bar

Central atom electronOuter atom electronLone pair

Blue dots begin on the central atom. Follow them into bonds or central lone pairs.

Simulation speed1×

Zoom100%

Structure-check history

Each change adds a point. Tracking a group highlights its contribution.