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Chem 210 Final Exam Study Guide
1. What is ground state electron configuration of Co? [Ar]3d^
[Ar]4s^1 3d^ [Ar]4s^2 3d^ [Ar]4s^2 4p^6 4d^1: [Ar]4s^2 3d^
2. molybdenum has an anomalous electron configuration. using the short- hand notation for
electron configurations, write the electron configuration A) [kr]5s 4d^ B) [kr]5s 4d^0 5p^ C) [kr]5s^1 4d^ D) [kr]5s^2 4d^4: C) [kr]5s^1 4d^
3. the symbol [Kr] represents
a) 4s^2 4p^ b) 1s^2 2s^2 2p^6 3s^6 4s^2 4p^ c) 1s^2 2s^2 2p^6 3s^6 4s^2 3d^10 4p^ D)1s^2 2s^2 2p^6 3s^6 4s^2 3d^10 4p^6 4d^10: c) 1s^2 2s^2 2p^6 3s^6 4s^2 3d^10 4p^
4. What is the wavelength of UV light in the balmer series when m=2 and n=7? a) 0.00252 nm
b) 397 nm
c)337 nm
d)0.00297 nm: b) 397 nm
5. How many electrons can a single orbital hold?
A) 2n
B) 2
C) 2l+
D)8: B) 2
6. What are the possible values of I and m1 for an electron in a 5d orbitial?
A) I=0 and mI= B) I=3 and MI=-2,-1,0,+1, or +2 c) I= and MI=-1,0,+ D) I=2 and MI=-2,-1,0,+1, +2: D) I=2 and MI=-2,-1,0,+1, +
7. What is the the de Broglie wavelength of an electron (m=9.11e-31 kg) moving at a velocity of
3.0e7m/s? a) 3.9e- b)2.4e- c)3.3e- d)1.1e-4: b)2.4e-
10. The alpha particle is A)
1 H
B)
1 H
C)
1 H
D)
2 He: D)
3 He
11. 15. An element has two naturally occurring isotopes. One has an abun- dance of 37.40% and an
isotopic mass of 184.953 amu, and the other has an abundance of 62.60% and a mass of 186. amu. What is the atomic weight of the element?
A) 185.7 amu
B) 186.0 amu
C) 186.2 amu
D) 187.0 amu: C) 186.2 amu
12. What is the chemical symbol for an atom that has 29 protons and 36 neutrons?
A) Cu B)Kr C)N D)Tb: A) Cu
13. How many protons (p) and neutrons (n) are in an atoms of 90Sr
A) 38 p, 52 n B) 38 p, 90 n C) 52 p, 38 n D) 90 p, 38 n: A) 38 p, 52 n
14. The observation that hydrogen and oxygen can react to form two com- pounds with different
chemical and physical properties, one having an O:H mass ratio = 8:1 and the other having an O:H mass ratio = 16:1 is consistent with the law of
A)definite proportions
C)halogen
D) noble gas: A) alkali metal
18. To the correct number of sig figs, an automobile traveling at 28 mi/h is traveling at kn/h (
km=0.6214 mi) A)17 b)17. C)45 D45.06: 45
19. how many sig figs are there in the following problem : 18.65+0.590=? A)one
B)two
C) three
D) four: D) four
20. Which of the following has the greatest number of sig figs? A)0.
B)0.
C)
D)6.02e24: A)0.
21. A student measured the diameter of a sphere and determined the average value. His
measurements are 5.17 cm, 5.16 cm, 5.16 cm, and 5.17 cm. If the true diameter is 6.18 cm, what can be said about the student's results?
A) it is accurate and precise
B)It is accurate but not precise
C) it is precise but not accurate
D) it is neither: C) it is precise but not accurate
22. If the melthing point of titanium metal is 16720C, what is its melting point in kelvin?
A)897K
B)1399K
C)1945K
D)3042: C) 1945 K
23. The diameter of an atom is approximately 1e-10m what is the diameter in millimeters?
A)1e-16mm B)1e-13mm C)1e-7mm D)1e-4 mm: C) 1e-7 ,,
24. convert 0.003002 to standard scientific notoation A)3.002e-
B) ionic bonding involves a transfer of electrons and covalent bonding in- volves a sharing
electrons.
C) ionic bonding requires two nonmetals and covalent bonding requires a metal and a nonmetal.
D) covalent bonding requires two nonmetals and ionic bonding requires a metal and a
nonmetal.: B) ionic bonding involves a transfer of electrons and covalent bonding involves a sharing electrons.
28. What type of bonding is found in the compound PC15?
A) covalent bonding
B) hydrogen bonding
C) ionic bonding
D) metallic bonding: A) covalent bonding
29. Which one of the following compounds contains ionic bonds?
A) CaO
B)HF
C)NI
D) Si02: A) CaO
30. Of the following, which element has the highest first ionization energy?
A) Al
B) Cl
C) Na
D) P: B) Cl
31. Which is the most acceptable electron dot structure for N2H2?: B)
32. Which element can accommodate more then eight electron is its valance shell
A) C
B) O
C) P
D) He: C) P
33. Which of the following contains an atom that does not obey the octect rule?
A) KBr
B) CO
C)CIF
37. the name for the compound formed from fluorine and bromine is
A) bromine monofluoride
B)fluorine monobromide
C) monobromine momofluoride
D) monofluorine monobromide: A) bromine monofluoride
38. What geometric arrangement of charge clouds is expected for an atom that has five charge
clouds?
A) tetrahedral
B)square planar
C) trigonal bipyramidal
D) octahedral: C) trigonal bipyramidal
39. What is the molecular geometry of AsCl
A) T-shaped
B) tetrahedral
C)trigonal planar
D) trigonal pyramimidal: D) trigonal pyramimidal
40. Which orbital hybridization is associated with a tetrahedral charge cloud arragement?
A) sp
B) sp
C) sp3: C) sp
41. A triple bond is generally composed of
A) three pi bonds
B)two pi bonds and one ohmaga bond
C) one pi bond and two ohmaga bond
D) three ohmaga bonds: B) two pi bonds and one ohmaga bond
42. what is the molecular geometry of If5?
A) octahedral
B) seesaw
C)square pyradmidal
D) trigonal bipyramidal: C)square pyradmidal
43. What are bond angles in BCl3 A) 180
B) 109.
C) 107
D) 120: D) 120
44. The MO diagram below is appropiate for B2 based on the diagram, B
A) has a bond order of one and is diamagnetic
C) has a bond order of two and is diamagnetic
D) has a bond order of two and is paramagnetic: A) has a bond order of one and is diamagnetic
45. Where are electron affinity values the highest?
A) top left
B) bottom left
C) Top right
D) Bottom right: C) Top right
46. Li2S is named
A) lithium disulfide
B) lithium sulfide
C) lithium(II) sulfide
D) lithium sulfur: B) lithium sulfide
47. What is the chemical formula for ferrous phosphate?
A) Fe2P
B) Fe2PO
C)Fe3P D)Fe3(PO4)2: D)Fe3(PO4)
48. Group 2A metals tend to be somewhat less reactive than alkali metals, and the order of their
reacivity is A) Ba>Sr>Ca>mg>Be B)Be>Mg>Ca>Sr>Ba
C) Ca>Mg>Be>Ba>Sr
D) Sr>Ca>Mg>Be>Ba: A) Ba>Sr>Ca>mg>Be
49. which molecule contains the most polar bonds? A)CF
B)CO
C)CN
D)CH4: A) CF
50. The formula for dinitrogen trioxide is
A) N(OH)
B) (NO3)
C) N2O
D) N3O2: C) N2O
51. What is the stoichiometric coefficient for oxygen when the following equa- tion is balanced using
the lowest, whole-number coefficients
A) 3
B) 5
A) S(s)
B) O2(g)
C) NaOH(aq)
D) none of theses: A) S
56. What is the concentration of
FeCI3 in a solution prepared by dissolving 10.0 g of FeCI3 in enough water to make 275 mL of solution? A) 0.224 M B) 2.224e-4 M C) 4.46 M D) 4.46e3 M: A) 0.224 M
57. Which of the following compounds contains the smallest percent oxygen by mass?
A) CO
B)N2O
C)P4O10 D)SO2: D)
SO
58. Which one of the following is an empirical formula?
A) C2F
B)H2SO
C) N2H
D) P4O10: B) H2SO
59. What term describes a solution of covalent-compound in water that does not conduct an electric
current? A) amorphous solution B an electrolyte solution
C) nonelectrolyte solution
D) superconducting solution: C) nonelectrolyte solution
60. What is the solid product that forms when K2SO4(aq) and Pb(NO3)2(aq) are mixed?
A) PbSO
B) K2S
C) Pb
D) KN03: A) PbSO
61. What is the chemical formula for sulfurous acid?
