Electronegativity Motion Lab

Across a periodWatch nuclear pull grow while the shell count stays the same.

Sodium atom

3 shells · weak pull · EN 0.93

Drag to pan · wheel to zoom · tap an electron or atom to track it

Choose an animated experiment

The lab will travel from sodium to chlorine. Compare the inward arrows and shrinking cloud.

Simulation speed1×

0.93Electronegativity

186 pmAtomic radius

3Electron shells

WeakEffective pull

—

Shared electrons shift toward fluorine

The three shells stay constant. Each step adds proton pull, so the electron cloud contracts and electronegativity rises.

nuclear pullelectronshielding wave

Blue: electronegativity. Orange: atomic radius. Opposite slopes across a period reveal their inverse relationship.

Show force labels

Extra shielding0

Ready · 10 steps

Press Start lecture. The teacher moves through the complete topic while the canvas changes with every explanation.

Language

Voice source

Teacher voice

Introduction to electronegativity0%

The lesson will begin with a chemical bond and build the trend step by step.

Ready. Nothing starts until you press Start complete lecture.

Choose a language and start the lecture.

Across a period: shells stay constant while proton pull grows. The cloud contracts and electronegativity rises.
Down a group: new shells add distance and shielding. Electronegativity falls.
In a bond: the more electronegative atom holds the shared pair closer.
Highest region: fluorine is near the top-right. Noble gases are usually left unassigned.

0 / 7