Atomic radius trends

Layer 2 — Chemistryin the periodic-table subtree

Decreases across period (↑Zeff), increases down group (↑n). Lanthanide contraction compresses post-Ln elements → Zr/Hf radii near-identical. Slater's rules for Zeff.

Related concepts

Periodic law
Electronegativity (Pauling)
Lanthanide contraction
Diagonal relationships (Li/Mg, Be/Al, B/Si)
Secondary (Biron) periodicity
Electron affinity anomalies
Oxidation state periodicity
Exchange interaction

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