2. Miscellaneous Families Trends Electron Configuration Valence Electrons 10 20 30 40 50 40 30 20 10 50 40 30 20 10 50 40 30 20 10 50 40 30 20 10

3. QUESTION: Which periodic family is generally unreactive? ANSWER: Noble Gases

4. QUESTION: This family will lose one electron in ionic bonds. ANSWER: Alkali Metals or group 1

5. QUESTION: This family generally loses 3 electrons to form anions. ANSWER: Group 5, Nitrogen Family

6. QUESTION: The first 5 elements in this family end with an -ine ANSWER: Halogens: Fluorine, Chlorine, Bromine, Iodine, Astatine

7. QUESTION: The family that is the second most reactive. ANSWER: Alkaline Earth Metals

8. QUESTION: Ionic Radius increases in which direction on the Periodic table? ANSWER: Towards the bottom left.

9. QUESTION: In which way does the electron affinity of elements increase? ANSWER: Across to the right, and up the table

10. QUESTION: In which way does electronegativity of elements increase? ANSWER: Across a row (right) and to the top right (up)

11. QUESTION: Does atomic radius and ionization energy increase in the same direction? ANSWER: No

12. QUESTION: As you go down the periodic table electronegativity…(increases or decreases) ANSWER: Decreases

13. QUESTION: Electron configuration of Beryllium (Be) ANSWER: 1s2 2s2 or [He] 2s3

14. QUESTION: Electron Configuration on Chlorine (Cl) ANSWER: 1s2 2s2 2p6 3s2 3s5 or [Ne] 3s2 3s5

15. QUESTION: Electron configuration of Iron (Fe) ANSWER: 1s2 2s2 2p6 3s2 3p6 4s2 3d6 or [Ar] 4s2 3d6

16. QUESTION: Electron Configuration of Cd 2+ (Cadmium) ANSWER: [Kr] 5s2 4d10

17. QUESTION: Name 2 isoelectronic ions with the same electron configuration as Ne. ANSWER: F- 1 Na+1

18. QUESTION: How many valence electrons are in the Halogen Family? ANSWER: 7

19. QUESTION: Which set of elements will have similar properties? Hydrogen and Chlorine or Oxygen and Sulfur ANSWER: Oxygen and Sulfur

20. QUESTION: Members of the same family possess similar properties. Why? ANSWER: Properties depend on number of valence electrons, and elements in the same family have the same number of valence electrons.

21. QUESTION: Which shell are valence electrons found in? ANSWER: The outermost shell.

22. QUESTION: Which valence electrons do you remove first when you form a cation using transition metals. ANSWER: S Sublevel

23. QUESTION: What did Dimitri Mendeleev do? ANSWER: Arranged elements by atomic mass

24. QUESTION: Who was H.G. Moseley and what did he do? ANSWER: He rearranged the periodic table to go by atomic number

25. QUESTION: What do we usually call metals in groups 3-12? ANSWER: Transition Metals

26. QUESTION: Which has a smaller atomic radius? Al^3+ or Mg^2+ ANSWER: Al^3+

27. QUESTION: The most active element in group 17 is… ANSWER: Fluorine