1. Entry Task: Oct 22nd Monday
Grab a Clicker
Calculator
Scratch paper
Equation sheet

2. Agenda
Review Ch. 6-9

3. Clicker Questions Chapter 6

4. What is the frequency of a wave which has a wavelength of 0.156 nm
5.2 x 10-10
1.92 x 109
0.468 x 108
1.92 x 10-9 of 30
Answer: b

5. Which color of visible light has the least amount of energy per photon?
Violet
Blue
Yellow
Red of 30
Answer: D

6. Increases Decreases stays the same varies
As the principal energy level increases in an atom's orbitals, the average distance of an electron energy level from the nucleus ______________.
Increases
Decreases
stays the same
varies of 30
Answer: a

7. The probability map for an electron is called
An orbit
Electron configuration
orbital
Electron map of 30
Answer: c

8. A given set of f orbitals consists of ______________ orbital(s).3 5 7 9 of 30
Answer: c

9. The maximum number of electrons allowed in each of the d orbitals is2 4 8 18 of 30
Answer: a

10. The maximum number of electrons allowed in the p sublevel of the third principal level is2 6 8 18 of 30
Answer: b

11. Phosphorus has how many electrons in its outermost principal energy level?2 3 5 15 of 30
Answer:c

12. The electron configuration for the sulfur atom is
1s22s22p63s23p2
1s22s22p63s23p4
1s22s22p63s5
1s22s22p63s23p5 of 30
Answer:b

13. How many electrons are in the third principal energy level (n = 3) of one atom of Fe?2 8 14 18 of 30
Answer:c

14. Clicker Questions Chapter 7

15. The first Periodic Table was created by
Amadeo Avogadro.
Dmitri Mendeleev.
Henry Moseley.
Ernest Rutherford. of 30
Answer: b

16. The effective nuclear charge felt by an atom’s valence electrons (X) going from left to right and (Y) going down a column on the Periodic Table.
X = increases Y = increases
X = increases Y = decreases
X = decreases Y = increases
X = decreases Y = decreases of 30
Answer: a

17. The correct order of increasing atomic radius (smallest  largest) is
Na < Mg < K < Rb.
Mg < Na < K < Rb.
Rb < K < Na < Mg.
Rb < K < Mg < Na. of 30
Answer: b

18. The statements below refer to ionic radii. Which statement is FALSE?
Br1– is larger than Cl1–.
Se2– is larger than Br1–.
K1+ is larger than Ca2+.
Na1+ is larger than K1+. of 30
Answer: d

19. Two ions are isoelectronic if they have the same
charge.
number of protons.
number of electrons.
number of neutrons. of 30
Answer: c

20. The minimum energy needed to remove an electron from an atom in its ground state is called the atom’s
potential energy.
activation energy.
electron affinity.
ionization energy. of 30
Answer: d

21. The energy change that occurs when an electron is added to an atom is called the atom’s
potential energy.
activation energy.
electron affinity.
ionization energy. of 30
Answer: c

22. The correct order of increasing first ionization energy (smallest  largest) is
Na < Ca < Al < Sn.
Na < Al < Ca < Sn.
Na < Al < Sn < Ca.
Ca < Na < Sn < Al. of 30
Answer: b

23. The correct order of increasing electron affinity (most negative  least negative) is
O < Cl < B < C.
O < Cl < C < B.
Cl < O < C < B.
Cl < O < B < C. of 30
Answer: c

24. Most metal oxides form _______ solutions when dissolved in water.
acidic
basic
neutral
amphoteric of 30
Answer: b

25. Most nonmetal oxides form _______ solutions when dissolved in water.
acidic
basic
neutral
amphoteric of 30
Answer: a

26. noble gas. halogen. group IIA metal. transition metal.
A soft gray solid reacts with water to form a flammable gas and a basic solution. The solid is most likely to be a
noble gas.
halogen.
group IIA metal.
transition metal. of 30
Answer: c

27. Ozone is an allotrope of which element?
hydrogen
oxygen
sulfur
chlorine of 30
Answer: b

28. Unknown solid X turns a Bunsen burner flame green and produces a purple color on reaction with NaOCl. X is
BaI2.
BaBr2.
SrI2.
d. SrBr2. of 30
Answer: a

29. The noble gases are monatomic. have filled s and p subshells.
are generally unreactive.
d. All of the above. of 30
Answer: d

30. Clicker Questions Chapter 8

31. The two types of chemical bonds commonly found in compounds are
doric and covalent.
ionic and electrolytic.
ionic and covalent.
electrolytic and compound. of 30
Answer: c

32. The Lewis symbol for a sulfur atom includes how many dots?5 6 7 8 of 30
Answer: b

33. The octet rule states that atoms tend to gain, lose, or share electrons until they have _______ valence electrons. 5 6 7 8 of 30
Answer: d

34. Which compound below has the largest lattice energy?
NaCl
KBr
CaO
CsI of 30
Answer: c

35. When a transition metal atom forms a +1 ion, it loses an electron from what type of orbital?d f of 30
Answer: a

36. Which choice below correctly lists the elements in order of increasing electronegativity (least  most) ?
C < N < O < F
N < C < O < F
N < C < F < O
C < N < F < O of 30
Answer: a

37. Which choice below correctly lists the elements in order of increasing electronegativity (least  most) ?
F < Cl < Br < I
F < Cl < I < Br
I < Cl < Br < F
I < Br < Cl < F of 30
Answer: d

38. The carbon disulfide (CS2) molecule has
two single bonds.
two double bonds.
a single bond and a double bond.
a single bond and a triple bond. of 30
Answer: b

39. The hydrogen cyanide (HCN) molecule has
two single bonds.
two double bonds.
a single bond and a double bond.
a single bond and a triple bond. of 30
Answer: d

40. The formal charge on the nitrogen atom in the nitrate ion (NO31–) is+2 +1 –1 of 30
Answer: b

41. The formate ion (HCO21–) is stabilized by resonance, which suggests that the oxygen atoms’ formal charges are:
–1 and –1
0 and 0
–1 and 0
–1/2 and –1/2 of 30
Answer: d

42. Which molecule below violates the octet rule?
PF5
CH4
NBr3
OF2 of 30
Answer: a

43. Which molecule below has an unpaired electron?NO
NH3
BF3
PF5 of 30
Answer: a

44. greater than less than equal to variable, depending on X and Y
For atoms X and Y, the bond enthalpy of an X-Y bond is _______ the bond enthalpy of an X=Y bond.
greater than
less than
equal to
variable, depending on X and Y of 30
Answer: b

45. greater than less than equal to variable, depending on X and Y
For atoms X and Y, the bond length of an X-Y bond is _______ the bond length of an X=Y bond.
greater than
less than
equal to
variable, depending on X and Y of 30
Answer: a

46. Clicker Questions Chapter 9

47. The overall shape of a molecule is determined by its
atoms.
bond angles.
Symmetry.
electron affinity. of 30
Answer: b

48. square planar. octahedral. square pyramidal. tetrahedral.
If a central atom is surrounded by six electron domains, the term used to describe its fundamental geometry is
square planar.
octahedral.
square pyramidal.
tetrahedral. of 30
Answer: b

49. The geometry of the methane (CH4) molecule is
linear.
trigonal bipyramidal.
trigonal planar.
tetrahedral. of 30
Answer: d

50. The geometry of the phosphorus trichloride (PCl3) molecule is
tetrahedral.
trigonal planar.
pyramidal.
trigonal bipyramidal. of 30
Answer: c

51. The geometry of the bromine trifluoride (BrF3) molecule is
see-saw shaped.
trigonal planar.
pyramidal.
T-shaped. of 30
Answer: d

52. The geometry of the xenon tetrafluoride (XeF4) molecule is
square planar.
tetrahedral.
see-saw shaped.
trigonal bipyramidal. of 30
Answer: a

53. Formic acid (HCO2H) has an O-C-O bond angle of (X) degrees and a C-O-H bond angle of (Y) degrees.
X = 180, Y = 120
X = 120, Y = 109.5
X = 180, Y = 109.5
X = 109.5, Y = 109.5 of 30
Answer: b

54. Which molecule is polar?
BBr3
SF6
NH3 of 30
Answer: d

55. Which molecule is nonpolar?
CO2
SO2
IF3
IF5 of 30
Answer: a

56. The hybridization of the oxygen atom in a water molecule is
sp.
sp2.
sp3.
sp3d. of 30
Answer: c

57. The central atom of which molecule below is sp3 d-hybridized?
SO3
SeBr4
XeOF4 of 30
Answer: c

58. A molecule of acetonitrile (CH3CN) contains _______ sigma bonds.2 3 4 5 of 30
Answer: d

59. A molecule of crotonaldehyde (CH3CH=CH-CH=O) contains _______ pi bonds.1 2 3 4 of 30
Answer: b

60. How did we do?