Khan Academy Static

How are the elements organized in the periodic table? This tutorial will cover the classification of elements including groups, transition metals, and valence electrons.

12136_Valence_electrons_and_bonding.html

12134_Counting_valence_electrons_for_main_group_elements.html

12132_The_periodic_table_classification_of_elements.html

12135_The_periodic_table_transition_metals.html

12133_Groups_of_the_periodic_table.html