Back to Subject
chemistry·NCERT Class 11·Classification of Elements & Periodicity

3D Periodic Trends

Medium+70 XP

Tap any element and see its atomic radius, ionisation energy, and electronegativity. Spot the anomalies — why does N have higher IE₁ than O?

›Atomic radius decreases across a period (more nuclear charge); increases down a group.
›IE₁ generally increases across a period; decreases down a group.