2. Summary of Periodic Trends Topic #12 continued…..

3. Valence Electrons Group: Group: As you go from top to bottom of a group, the valence electrons of the atoms STAYS THE SAME. Period: Period: As you go from left to right of a period, the valence electrons of the atoms INCREASES. Valence electrons increases Valence electrons stays the same

4. Atomic Radius Atomic radius decreases Atomic radius increases Group: Group: As you go from top to bottom of a group, the atomic radius of the atoms INCREASES Period: Period: As you go from left to right of a period, the atomic radius of the atoms DECREASES.

5. Ionization Energy Group: Group: As you go from top to bottom of a group, the ionization energy DECREASES. Period: Period: As you go from left to right of a period, the ionization energy INCREASES. Ionization Energy increases Ionization energy decreases

6. Electronegativity Electronegativity increases Electronegativity decreases Group: Group: As you go from top to bottom of a group, the electronegativity DECREASES Period: Period: As you go from left to right of a period, the electronegativity INCREASES.

7. Summary of Periodic Trends Electronegativity increases Ionization Energy increases Atomic radius decreases Valence electrons increases Electronegativity decreases Ionization energy decreases Atomic radius increases Valence electrons stays the same

8. Quick Review LiNe Na C K N Which atom has an electron configuration of 1s 2 2s 2 2p 6 3s 1 ?

9. Quick Review LiNe Na C K N Which atom/s have 1 valence electron?

10. Quick Review LiNe Na C K N Which atom/s have 8 valence electrons?

11. Quick Review LiNe Na C K N List Li, C, N and Ne by increasing atomic radius. Ne, N, C, Li

12. Quick Review LiNe Na C K N Which among Li, Na, and K has the least ionization energy?

13. Quick Review LiNe Na C K N Which among Li, Na and K is the most electronegative?

14. TIMED QUIZ 09/19/2012

15. LiNe Na C K NBe He F 1.Which atom/s has 2 valence electrons? Use ONLY the given elements to answer the questions in your QUIZ.

16. LiNe Na C K NBe He F Use ONLY the given elements to answer the questions in your QUIZ. 2. Which atom/s has 5 valence electrons?

17. LiNe Na C K NBe He F Use ONLY the given elements to answer the questions in your QUIZ. 3. List Li, Na, and K by increasing atomic radius. (smallest to largest)

18. LiNe Na C K NBe He F Use ONLY the given elements to answer the questions in your QUIZ. 4. List C, N, and F by decreasing atomic radius. (largest to smallest)

19. LiNe Na C K NBe He F Use ONLY the given elements to answer the questions in your QUIZ. 5. Which among Li, Na, and K has the most ionization energy?

20. LiNe Na C K NBe He F Use ONLY the given elements to answer the questions in your QUIZ. 6. Which among C, N, and F have the least ionization energy?

21. LiNe Na C K NBe He F Use ONLY the given elements to answer the questions in your QUIZ. 7. Which of these atom(s) do not contain any electronegativity?

22. LiNe Na C K NBe He F Use ONLY the given elements to answer the questions in your QUIZ. 8. Which of all these atoms is the most electronegative?

23. LiNe Na C K NBe He F Use ONLY the given elements to answer the questions in your QUIZ. 9. Which of these atoms are not likely to form compounds with other atoms?

24. LiNe Na C K NBe He F Use ONLY the given elements to answer the questions in your QUIZ. 10. Write the electron configuration for carbon. (either noble gas notation or extended notation)