By the end of this unit students will be able to:

  • Compare and contrast Mendeleev’s and Mosely’s periodic tables.
  • Identify the group, period, family name, and number of valence electrons for any element based on its location on the periodic table. 
  • Write electron configurations using the Noble Gas method.
  • Determine the number of valence electrons an atom has both from the atom’s electron configuration and its location on the Periodic Table.
  • Define atomic radius and describe the trend as it goes across a period and down a group.
  • Define ionic radius and describe the trend as electrons are gained or lost. 
  • Define ionization energy and describe the trend as it goes across a period and down a group.
  • Define electronegativity and describe the trend as it goes across a period and down a group