1. BONDING REVIEW You need a Periodic Table, Electronegativity table & Polarity chart!

2. What is the correct bond angle for “Bent” – with 2 lone pairs on the central atom? 105

3. What is the predicted bond angle for the following compound? 109.5

4. Write the electron dot notation for sulfur. S

5. How many valence electrons does CO 3 -2 ? 24

6. When predicting bond types, list the range for ionic. 1.7 and higher

7. Where are valance electrons found? Outermost energy level

8. What is an isomer? Compounds with the same molecular formula, but different structural formulas

9. ______ is the measure of the ability of an atom to attract electrons. Electronegativity

10. A single bond is a covalent bond produced by the sharing of _____pair of electrons between two atoms one

11. Assign partial charges for the following pair of atoms: N and O N-O Note: O gets the – b/c it has a higher electronegativity value!

12. What is the predicted bond angle for the following compound? 180

13. What is the molecular geometry of the following?: Trigonal planar

14. A chemical bond resulting from electrostatic attraction between positive and negative ions is a(n) _______ IONIC BOND

15. What is the predicted bond angle for the following compound? 120

16. What is the probable bond type for K and F? 0.8-4.0 = 3.2 difference so it’s IONIC

17. What is the correct bond angle for “tetrahedral”? 109.5

18. Is this molecule Polar or Nonpolar? NCl 3 You need to use your polarity chart! Nonpolar

19. How many valence electrons does NH 4 +1 ? 8

20. How many electrons does hydrogen need in order to be considered stable? 2

21. ________ is a covalent bond in which the bonding electrons are shared equally by the bonded atoms NONPOLAR covalent

22. What are the following considered?: H 2, O 2, N 2, Cl 2, Br 2, I 2, and F 2 Diatomic molecules (naturally occuring)

23. What is the predicted bond angle for the following compound? 120

24. MgF 2 What is the ratio between the ions? 1Mg : 2 F

25. A triple bond is a covalent bond produced by the sharing of _____pairs of electrons between two atoms THREE

26. When predicting bond types, list the range for polar covalent. 0.3-1.7

27. A  - is assigned to the atom with the _______electronegativity Highest

28. Ionic compounds contain what type(s) of element(s)? Metals and nonmetals

29. What phase(s) of matter would you most likely find ionic compounds? SOLIDS

30. ________ is the simplest collection of atoms from which an ionic compound’s formula can be established Formula unit

31. What is the molecular geometry of the following: Trigonal pyramidal

32. What is the correct bond angle for “Bent” – with 1 lone pairs on the central atom? 120

33. Molecular substances usually involve only what type of elements? NONMETALS

34. Is this molecule Polar or Nonpolar? Cl 2 O You need to use your polarity chart! Polar

35. Chemical compounds tend to form so that each atom (by gaining, losing, or sharing electrons) contains eight electrons in its outermost occupied main energy level is known as the _______________ Octet Rule

36. Write the electron dot notation for lithium. Li

37. What is the predicted bond angle for the following compound? 105

38. What type of bond is illustrated in the picture? Polar Covalent Bond + + --

39. __________are electrons involved in bonding. VALANCE Electrons

40. _______ is a neutral group of atoms held together by covalent bonds Molecule

41. What is the correct bond angle for “trigonal pyramidal”? 107

42. What is the probable bond type for H and C? 2.1-2.5 = 0.4 difference so it’s POLAR COVALENT

43. ______ is a molecule containing only two atoms Diatomic molecule

44. What is the correct bond angle for “trigonal planar”? 120

45. _____ is an electron pair NOT involved in bonding Lone pair

46. What is the molecular geometry of the following?: Bent

47. ______ is an electron pair involved in bonding Bond pair

48. A double bond is a covalent bond produced by the sharing of _____pairs of electrons between two atoms TWO

49. List the 3 elements that are exceptions to the octet rule. H, Be, B

50. What phase(S) of matter would you find molecular substances? Solids, liquids, gases

51. What two items needs to be added to the electron dot/structural formulas for polyatomic ions? BracketCharge

52. What is the predicted bond angle for the following compound? 107

53. When predicting bond types, list the range for nonpolar covalent. 0-0.3

54. What is the correct bond angle for “linear”? 180

55. _________ is a covalent bond in which the bonding electrons are shared unequally by the bonded atoms POLAR covalent

56. What is the molecular geometry of the following?: Linear

57. What is the probable bond type for H and H? 2.1-2.1= 0 difference so it’s NONPOLAR COVALENT

58. A chemical bond resulting from the sharing of electrons between two atoms is _______ Covalent Bond

59. What type of bond is illustrated in the picture? Nonpolar Covalent Bond

60. What is the molecular geometry of the following?: Tetrahedral

61. Use electron-dot formulas to illustrate the formation of ionic bonds involving Ca and F. Ca + F + F  Ca +2 + F -1 + F -1 CaF 2