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Periodic table

The periodic table - classification of elementsGroups of the periodic tableCounting valence electrons for main group elementsThe periodic table - transition metalsValence electrons and bonding
Atomic radius trends on periodic tableAtomic and ionic radiiMini-video on ion sizeIonization energy trendsPeriod trend for ionization energyFirst and second ionization energyElectron affinity: period trendElectronegativityElectronegativity and bondingMetallic nature

About this unit

Learn how the periodic table organizes the known elements of our world. Check out our videos and exercises on atomic structure and properties and periodic trends.