1. 6.2 Classifying the Elements > 1 Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved.. Chapter 6 The Periodic Table 6.1 Organizing the Elements 6.2 Classifying the Elements 6.3 Periodic Trends

2. 6.2 Classifying the Elements > 2 Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved.. Reading the Periodic Table Do Now: 1.Which element has chemical properties similar to Oxygen? Lithium, Neon, Phosphorus, or Sulfur 2.Classify each as metal, metalloid, or nonmetal. a.Aluminum b.Silicon c.Phosphorus d.Cadmium

3. 6.2 Classifying the Elements > 3 Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved.. Reading the Periodic Table –Group 1A elements are called alkali metals. https://www.youtube.com/watch?v=Hv VUtpdK7xw –Group 2A elements are called alkaline earth metals. http://www.rsc.org/periodic-table/

4. 6.2 Classifying the Elements > 4 Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved.. Reading the Periodic Table The nonmetals of Group 7A are called halogens.

5. 6.2 Classifying the Elements > 5 Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved.. Helium, neon, and argon noble gases, the elements in Group 8A. Electron Configurations in Groups The Noble Gases Sometimes called the inert gases because they rarely take part in a reaction. Nonmetals

6. 6.2 Classifying the Elements > 6 Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved.. Electron Configurations in Groups The Noble Gases The s & p sublevels are completely filled This explains why these elements are unreactive Helium (He)1s21s2 Neon (Ne)1s22s22p61s22s22p6 Argon (Ar)1s22s22p63s23p61s22s22p63s23p6 Krypton (Kr)1s 2 2s 2 2p 6 3s 2 3p 6 2d 10 4s 2 4p 6

7. 6.2 Classifying the Elements > 7 Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved.. Electron Configurations in Groups The Representative Elements Groups 1A through 7A – display a wide range of physical and chemical properties

8. 6.2 Classifying the Elements > 8 Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved.. Electron Configurations in Groups The s and p sublevels of the highest occupied energy level are not filled. The Representative Elements Lithium (Li)1s22s11s22s1 Calcium (Ca)1s22s22p63s23p64s21s22s22p63s23p64s2 Chlorine (Cl)1s22s22p63s23p51s22s22p63s23p5 For any representative element, group number equals the number of electrons in the highest occupied energy level.

9. 6.2 Classifying the Elements > 9 Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved.. Electron Configurations in Groups Transition Elements The B group elements separate the A groups on the left side of the table from the A groups on the right side. Elements in the B groups are referred to as transition elements. These elements are characterized by the presence of electrons in d orbitals.

10. 6.2 Classifying the Elements > 10 Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved.. Electron Configurations in Groups Transition Elements The inner transition metals are the elements that appear below the main body of the periodic table. The inner transition metals are characterized by the presence of electrons in f orbitals. Also referred to as the Rare Earth elements

11. 6.2 Classifying the Elements > 11 Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved.. Electron Configurations in Groups Blocks of Elements The periodic table is divided into sections, or blocks, that correspond to the highest occupied sublevels.

12. 6.2 Classifying the Elements > 12 Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved.. END OF 6.2