1. $$$ Quiz $$$ Covalent Bonding and Naming

2. A bond in which electrons are shared. covalent

3. A bond in which electrons are exchanged or taken. ionic

4. How many valence electrons are in an atom of selenium? 6

5. Does PCl 3 break the octet rule? Part 2: Draw the lewis structure on the board. no

6. True or False: The pair of electrons in ammonia not involved in bonding is called the “outer pair” ? False, lone pair or unshared pair

7. What type of bond forms when an “s” orbital overlaps with an s, p, or hybrid orbital? Sigma,

8. Does the element iodine exist as a monotomic, diatomic, or triatomic molecule? diatomic

9. What type of orbital and how many of these orbitals are needed to make a pi bond. “p” orbital, 2

10. Write down the prefixes (from 1-10) used in naming binary molecular compounds. Mono, di, tri, tetra, penta, hexa, hepta, octa, nona, deca

11. Draw a hydrogen bond on the board.

12. A triple bond contains how many electrons? 6

13. CsF, H 2 O, ZnS, Ba I 2 Which one of these compounds is a molecular (covalent) compound? H2OH2O

14. Give the hybridization of each carbon atom in the following molecule? sp 3 sp 2 sp

15. What is the shape of AsF 3 ? Trigonal pyramidal

16. What is the shape of GeCl 4 ? Tetrahedral

17. What is the shape of SeCl 2 ? Bent or Angle

18. What is the shape of AlCl 3 ? Trigonal Planar

19. What is the shape of CS 2 ? Linear

20. What is the shape of PBr 5 ? Trigonal Bipyramidal

21. Which one of these is the most polar bond? C-O or C-F or C-Cl or C-N C-F, polar covalent bond

22. What type of hybrid orbital exists in a methane molecule? sp 3

23. Name the four intermolecular forces that we recently talked about. Dipole-dipole Ion-dipole Dispersion forces (London) Hydrogen bonding

24. Which one of these forces is the weakest? Dipole-dipole Ion-dipole Dispersion forces (London) Hydrogen bonding

25. Write the formula for nitrogen trioxide. NO 3

26. Write the formula for diphosphorus pentabromide. P 2 Br 5

27. Write the name of the compound, H 2 O 2. Dihydrogen dioxide, hydrogen peroxide

28. Write the name of the compound, Si 2 Cl 7. Disilicon heptachloride

29. What is the chemical formula of tin(IV) carbonate? Sn(CO 3 ) 2

30. A bond where electrons are shared is known as a _______ bond? covalent

31. Is there such a thing as S 3- ? No, only S 2-, sulfide

32. Draw the electron dot structure of silicon?

33. How many valence electrons does aluminum have? three

34. Draw the lewis structure for SCl 2

35. Draw the lewis structure for AsH 3

36. Draw the lewis structure for HSCN

37. Is CHCl 3 a polar or nonpolar molecule?

38. Is BCl 3 a polar or nonpolar molecule?

39. Is NO 2 a polar or nonpolar molecule? What’s its geometry? Does it have resonance structures? Show on board. Polar, bent

40. Draw the electron dot structure of antimony ?

41. What is the chemical formula of ammonium hydroxide? NH 4 OH