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CHEMISTRY STUDY GUIDE CHAPTER 11 11.1 Organizing By Properties Explain how the following scientists contributed to the development of the periodic table: Mendeleev- Moseley: State the periodic law11.2 The Modern Periodic Table Horizontal rows are called ____________. Vertical columns are called ___________ or __________. Chemical Families: Identify the location of each of the following groups: alkali metalsalkali earth metalsrepresentative elementstransition metalsinner-transition metals How are other groups on the table named ? 11.3 Patterns for Representative Elements What are valence electrons and core electrons? How can you determine the number of valence electrons by looking at the periodic table? 11.4 Patterns for Representative Element Ions Why are noble gasses unreactive? What is meant by the term isoelectronic? Fill in the following: # valence electrons # electrons it will loose/gain Ion Charge Alkali metals _________ _________ __________ Alkaline Earth Metals __________ _________ _________ Halogens __________ _________ __________ Forming Ions : Metals ___________ electrons and nonmetals ___________ electrons when they react together. 11.5 Patterns for Transition Elements and Ions Fourth period transition elements Why do unexpected configurations occur? Ion Formation Transition metals tend to form more than one ion. Why? Where does the electron lost first come from? 11.6 Atomic and Ionic Radii Trends Trends in atomic radii Name two: 1. 2. Explain these trends. The first trend is because - The second trend is because- What effect does shielding have? Ion size versus atom size What is the general trend for the formation of ions? Positive ions are ________ than the atom. Negative ions ________ than the atom. 11.7 Ionization Energy Ionization energy changes across a period As you move from left to right across a period the first ionization energy _______. This is becauseDeviations in the trend What do these deviations depend on? Why is it easier to remove an electron from a 3p orbital than a 3s? Ioniztion energy within a group As you go down a group the first ionization energy ____________. This is becauseSuccessive ionization energies The ionization energy for each successive energy level becomes ___________. You need to be familiar with this chart and the reasoning behind all of the trends.