Electron Shell Models
Animated Bohr models drawn from real configuration data.
What it is
Every element page carries an animated Bohr shell model of its atom. The nucleus sits at the centre while electrons travel round their shells — and the picture is not decoration: the shells and their electron counts are computed by the same electron-configuration engine that writes the configuration, so the model you watch matches the configuration you memorise. Beneath the animation, shell bars show exactly how many electrons sit in each shell. If your device requests reduced motion, the orbits pause automatically and you get the same model, still and complete.
Why it helps you study
Shell questions are guaranteed marks in NCTB exams, and examiners want the shell counts drawn and named. Watching sodium’s eleven electrons settle into 2, 8, 1 builds the picture your memory keeps far better than a line of numbers does. Because the model is generated from the real configuration engine, you can trust every orbit you count — this is the same data, wearing its visual form. Moving pictures make still diagrams finally make sense.
How to use it
- Open any element page — try sodium, number 11.
- Find the electron model in the electron section of the page.
- Watch the shells orbit, then read the electron count on each shell bar.
- Copy the same shell counts into your exam diagram.
Questions students ask
Why is the model standing still on my screen?
If your device or browser asks for reduced motion, the animation pauses automatically — you still see the full model and every shell bar, just without movement.
Are the shells drawn from real data?
Yes — every shell and electron comes from the site’s electron-configuration engine, the same engine that writes the configuration text on the page.