Periodic Table and Periodic Trends


Chapter Objectives
At the end of this unit students will be able to
1.  explain how elements are organized in a periodic table.
2.  compare early and modern periodic tables.
3.  distinguish among metals, nonmetals, and metallods.
4.  classify elements based on electron configuration.
5.  describe trens among elements for atomic size, ionic size, first ionization energy.
6.  identify members of element families.
Key Terms
alkali metals
alkaline earth metals
anions
atomic radius
cation
electronegativity
halogens
inner transitional metal?
ion
 ionization energy
metalloids
metals
noble gases
nonmetals
periodic law
representative elements
transition metals