Periodic Trends

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Discusses periodic trends in atomic and ionic radius, with pictures and some discussion of the electron configurations behind the trends.

Great quiz on the periodic table including trends and the history of the periodic table. Useful for students studying for a periodic table test.

An explanation of what valence electrons are and how they relate to the periodic table.

Chapter 6 - Standard Esthetics

A video demonstration of Periodic Table Trends from Salman Khan of Khan Academy.

Periodic Table

Explains most of the periodic trends in terms of shielding of the nucleus by the inner shells of electrons. Includes a discussion of size (radius), ionization energy, electron affinity, electronegativity, metallic character, reactivity and common charges.

1-36 Periodic Elements + Ag Pt Au Hg Sn Pb I Rn U

Covers the vertical and horizontal trends in the periodic table and explanations.