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CPA Study Guide for Chapter 6 Test The Periodic Table Know the difference between Mendeleev’s organization of the elements versus the modern organization of the Periodic Table Know and be able to apply the Periodic Law Know the names of families of elements: alkali metals, alkaline earths, halogens, noble gases, metalloids and transition elements Define and know the trend for ionization energy Define and apply the trend in electronegativity Cation versus anion Trend in atomic radius; comparing radii in an isoelectronic series; comparing the radius of a parent atom to its ion Be able to identify the number of valence electrons in each family of the representative elements Be able to predict the charge on an ion based on the atoms tendency to obtain a noble gas electron configuration Be able to write/identify an element form its electron configuration AND locate the position on the Periodic Table from the outer electron configuration Recall that two trends (ionization energy and radius) do include the noble gases and two trends(electronegativity and electron affinity ) do not Metallic character is the “willingness” of an atom to lose an electron: the elements in the southwest corner of the Periodic Table are the most metallic and the elements in the northeast (omit noble gases) are the least metallic