*Periodic+Table+Assignment

Here are some of the best Examples of how the periodic table assignment should look. Overall I'm very pleased with the work you've all done. These student's tables are not necessarily the best, but they do have everything they should have. If any of the authors wants me to remove their tables from this page, please let me know and I'll post another.









Popular mistakes (Students did not include that):
 * H is not an Alkali metal
 * La is the first Lanthanide and Ac is the first Actinide
 * The representative elements include group numbers 1,2,13,14,15,16,17 and 18





Popular mistakes:
 * Not saying whether your arrows indicate an increase or decrease in the noted direction
 * Not noting that: The major factor affecting trends moving from left to right is the increase in nuclear charge, size difference is a minor factor here. The size difference (atomic radius of atoms) is only the major factor when moving down the periodic table as the number of shells present increases.
 * Not explaining anywhere what each trend means. ex. electronegativity is the tendency for an atom to attract electrons from a neighboring atom.
 * More electrons need more space. This is untrue. Since atoms are mostly empty space (about 99%), their size has nothing to do with the number of particles that make it up. Rather, their size is dictated by the distance those particles have from each other.





Popular mistakes (Not including the following):
 * He is in the 1s subshell
 * Lathanides are 4f (not 5f) and the actinides are 5f (not 6f)
 * The shell number (n=...) in a single period is not the same for d or f as it is with s and p.





Popular mistakes (leaving out that):
 * H can act as both a metal and non-metal
 * The Lanthanides and Actinides are metals
 * Semiconductors act more like metals than non-metals