1. Drill: Determine EC, EDD, & Ox # for each element in CuCl 2

2. Chemical Periodicity

3. Atomic Size Size increases as you go down in any column Size decreases from left to right in any row

5. Ionic Size Size increases as total charge decreases C +2 > C +4 F -1 > F

7. Rank the elements from their atomic number from smallest to largest 9, 55, 13, 11, & 1

8. Ionization Energy The energy required to remove electrons from atoms or ions

9. 1st Ionization Energy Decreases as you go down any column Increases from left to right on any row Fr <<<<<<<<<<<<<He

12. Shielding Effect The further away an electron is from the nucleus, the more electron clouds lie between the electron & the nucleus

13. Drill: Arrange the following atoms from lowest to highest 1 st ionization energies: 2, 20, 14, 55, 7

14. Review HW Problems: 40 – 42 & 57 – 64 on pages 170 & 171

15. Ionization Energies 2nd > 1st 3rd > 2nd Massive increase when a shell is emptied

17. Electron Affinity The attraction of electrons by an atom

18. Electron Affinity Decreases as you go down any column Increases from left to right across any row Fr <<<<<<<<<<<< F

20. Electronegativity The attraction of shared pairs of electrons by an atom

21. Electronegativity Decreases as you go down any column Increases from left to right across any row Fr <<<<<<<<<<<< F

23. Metallic Character Increases as you go down any column Decreases from left to right across any row

25. Reactivity Metals 1A > 2A > 3A Metals increase down Nonmetals increase as you get closer to F

26. Metal Oxides When dissolved in water, make basic solutions Sometimes called basic anhydrides MgO, Na 2 O, etc

27. Non-metal Oxides When dissolved in water, make acidic solutions Sometimes called acid anhydrides CO 2, SO 2, SO 3, NO 2

28. Metal Hydrides Metals bonded to H When dissolved in water, make basic solutions NaH, MgH 2, AlH 3, etc

29. Non-metal Hydrides Non-metals bonded to H When dissolved in water, make acidic solutions HCl, H 2 S, HBr, etc Exception: NH 3

30. Place the following elements in largest to smallest order with respect to: 1) diameter 2) 1 st ionization energy 3) electronegativity 4) metalic character Elements #: 1,5, 8, 15, 56

31. Identify as ionic, covalent, or metallic bonds Na-Cl Fe-Cr S-ClH-Cl Mg-SC-C N-OFe-Fe