WS #8 Qt2 Pkt2
				Name:  __________________________
	CHEMISTRY HONORS Periodic Trends and Reaction Tendencies     PERIODIC TRENDS Define: 1. Atomic Radius _________________________________________________ Nobel Gas Configuration______________________________________________________________ Using your text book and whatever you know from class discussions answer the following questions. 3. An atom of Sodium has a larger atomic radius than an atom of Chlorine. Explain why. __________________________________________ 4. NaCl, when dissolved in water carries an electric current. Why doesn't it carry an electric current in the solid form? ____________________________________________ 5. If Iron has an oxidation number of 1s2,2s2,2p6,3s2,3p6,4s2,3d6, how does it form ions with oxidation numbers 2+ and 3+?____________________________________________________________________________   REACTION TENDENCIES Define: 1. ionization enery ____________________________________________________________ 2. first ionization energy ______________________________________________________________________________ 3. sheilding effect ______________________________________ 4. electron (e-) affinity ________________________________________________________________________ Answer the following to the best of your knowledge. 5.What four factors affect ionization energy? Explain each. __________________________________________ ___________________________________________ ___________________________________________ ___________________________________________ Fill in the blanks, using what you know and your text books. 6. As atomic number increases, in any horizontal row or period the first ionization energy tends to __________________________. 7.  A column or group will show a decrease in first ionization energy as atomic number _____________________. 8. Ionization energy is typically measured in units called _____________________. 9. Metals have a ___________first ionization energy and non-metals have a _____________ first ionization energy. 10. Nonmetals have _______________ electron affinities, and metals have ___________ electron affinities. Moving down a column electron affinities tend to _______________.