Here is a video explaining the properties of particular periods, groups, and blocks of the periodic table. Courtesy of: Khanacademy
The periodic table is made up of four blocks: the s-block, p-block, d-block, and f-block.These blocks, or sections, that divide the periodic table represent the filling of valence electrons of the energy sublevels of atoms.
A study guide for the blocks, periods, and groups of the periodic table.
These flashcards will help you better understand intermediate chemistry.