The Periodic Table Review

1. The Periodic TableReview Who is Mendeleev? How did Mendeleev organize the periodic table?

2. A. Dmitri Mendeleev • Dmitri Mendeleev (1869, Russian) • Organized elements by increasing atomic mass. • Predicted the existence of undiscovered elements.

3. The Periodic Table Who is Mosely? How did Mosely organize the periodic table?

4. B. Henry Mosely • Henry Mosely (1913, British) • Organized elements by increasing • Fixed problems in Mendeleev’s arrangement. atomic number

5. The Periodic Table Review

6. The Periodic Table On the periodic table where are the metals located?

7. A. Metallic Character Metals found on the left • Metals • Nonmetals • Metalloids

8. The Periodic Table Where are the non-metals?

9. A. Metallic Character Nonmetals are on the right • Metals • Nonmetals • Metalloids

10. The Periodic Table Where are the metalloids ?

11. Metalloids are between the metals and nonmetals A. Metallic Character • Metals • Nonmetals • Metalloids

12. A. Metallic Character • Metals • Nonmetals • Metalloids

13. The Periodic Table Where are the representative elements ?

14. B. Table Sections • Representative Elements • Transition Metals • Inner Transition Metals

15. The Periodic Table Where are the transition metals?

16. B. Table Sections • Representative Elements • Transition Metals • Inner Transition Metals

17. B. Table Sections • Representative Elements • Transition Metals • Inner Transition Metals

18. Columns & Rows • Group (Family) • Period

19. The Periodic Table Periodic Trends

20. A. Terms • Periodic Law • Properties of elements repeat periodically when the elements are arranged by increasing atomic number.

21. A. Terms • Valence Electrons • e- in the outermost energy level

22. 1A 8A 2A 3A 4A 5A 6A 7A B. Periodic Trends • Group # = # of valence e- (except He) • Families have similar reactivity. • Period # = # of energy levels

23. C. Dot Diagrams • Dots represent the valence e-. • EX: Sodium • EX: Chlorine