Chemistry I CH 8

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cmk34444
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16606
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Chemistry I CH 8
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2010-04-28 12:49:24
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cmk3444 Chem
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Ch 8-Chemical Bonding
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  1. Which of these compounds is most likely to be ionic?
    KF, CCl4, CS2, CO2, ICl
    KF
  2. Which of these compounds is most likely to be ionic?
    GaAs, SrBr2, NO2, CBr4, H2O
    SrBr2
  3. Which of these compounds is most likely to be ionic?
    NCl3, BaCl2, CO, SO2, SF4
    BaCl2
  4. Which of these pairs of elements would be most likely to form an ionic compounds?
    Cl and I, Al and K, Cl and Mg, C and S, Al and Mg
    Cl and Mg
  5. Which of the following contains ionic bonding?
    CO, SrF2, AL, OCl2, HCl
    SrF2
  6. Which of the following is an ionic compound?
    H2S, NH3, I2, KI, CCl4
    KI
  7. Which of these ionic solids would have the largest lattice energy?
    NaCl, NaF, CaBr2, CsI, CaCl2
    CaCl2
  8. Which of these ionic solids would have the largest lattice energy?
    SrO, NaF, CaBr2, BaSO4
    SrO
  9. The lattice energy for ionic crystal increases as the charge on the ions and the size of the ions .
    inc, inc
    inc, dec
    dec, inc
    dec, dec
    none of these
    Increase, Decrease
  10. Select the compound with the highest (i.e., most negative) lattice energy.
    CaS(s), BaO(s), NaI(s), LiBr(s), MgO(s)
    MgO(s)
  11. A Born-Haber cycle applied to the formation reaction of an ionic solid. Is normally used to.. calculate ionization energy,
    calculate electron affinity,
    calculate bond energy,
    determine the overal enthalpy change,
    is an application of Hess's Law
    is an application of Hess's Law
  12. Which of these compounds is most likely to be covalent?
    Rb2S, SrCl2, CS2, CaO, MgI2
    CS2
  13. Which of these compounds is most likely to be covalent?
    KF, CaCl2, SF4, Al2O3,CaSO4
    SF4
  14. Which of these compounds is most likely to be covalent?
    CsOH, NF3, Sr(NO3)2, CaO, LiF
    NF3
  15. Which of the following is a covalent compound?
    Na2O, CaCl2, Cl2O, CsCl, Al2O3
    Cl2O
  16. Which of the following is a covalent compound?
    BaO, IBr, Mg, LiBr, Cu
    IBr
  17. Arrange the following bonds in order of increasing bond strength.
    C-I < C-Br < C-Cl < C-F
    C-F < C-Cl < C-Br < C-I
    C-Br < C-I < C-Cl < C-F
    C-I < C-Br < C-F < C-Cl
    None of these orders is correct
    C-I < C-Br < C-Cl < C-F
  18. Select the strongest bond in the following group.
    C-S, C-O, C=C, C=N, C-F
    C=N
  19. Select the strongest bond in the following group.
    C-C, C-O, C=C, C=C, C-F
    C=C
  20. Which is the correct order for increasing bond strength? (1) C=C (2) C=C (3) C-C
    3 < 2 < 1
    3 < 1 < 2
    1 < 2 < 3
    1 < 3 < 2
    2 < 3 < 1
    3 < 2 < 1
  21. Which is the name given to the forces in a covalent compounds that exists between molecules?
    Intramolecular forces
    Intermolecular forces
    Covalent forces
    Ionic forces
    Molecular forces
    Intermolecular forces
  22. What type of elements undergo ionic bonding?
    2 metals
    a nonmetal and a metal
    2 nonmetals
    2 Group 1A element
    2 Noble gases
    a nonmetal and a meta
  23. What type of elements undergo covalent bonding?
    1 metal and noble gas
    a nonmetal and a metal
    2 nonmetals
    2 Group 1A elements
    a actinide
    2 nonmetals
  24. In which of these substances are the atoms held together by polar covalent bonding?
    SrCl2, CsCl, ClF, TiF2, S8
    ClF
  25. A polar covalent bond would form in which one of these pairs of atoms?
    Cl---Cl
    Si---Si
    Ca---Cl
    Cr---Br
    P---Cl
    P---Cl
  26. A nonpolar covalent bond (i.e., pure covalent) would form in which of these pairs of atoms?
    Na---Cl
    H---Cl
    Li---Br
    Se---Br
    Br---Br
    Br---Br
  27. Which of these covalent bonds is the most polar (i.e., highest percent ionic character)?
    Al---I
    Si---I
    Al---Cl
    Si---Cl
    Si---P
    Al---Cl
  28. The covalent bond with the greatest polarity would form in which of these atom pairs?
    Br---Br
    S---O
    C---P
    C---O
    B---O
    B---O
  29. In which of these pairs of atoms would the bond be the least polar (i.e., lowest percent ionic character)?
    C---Cl
    C---C
    C---H
    O---C
    N---C
    C---C
  30. Which of these elements has the greatest electronegativity?
    Na, As, Ga, Cs, Sb
    As
  31. Which of these atom is the most electronegative?
    Li, Cs, P, As, Ge
    P
  32. Which of these elements is the least electronegative?
    Sr, V, Ni, P, I
    Sr
  33. Which of the following elements is the most electronegative?
    S, Ru, Si, Te, Cs
    S
  34. Which of the following elements is the least electronegative?
    Si, Se, S, Sc, Sr
    Sr
  35. Arrange aluminum, nitrogen, phosphorus, and indium in order of increasing electronegativity.
    Al < In < N < P
    Al < In < P < N
    In < Al < P < N
    In < P < Al < N
    None of these orders is correct
    In < Al < P < N
  36. Arrange calcium, rubidium, sulfur, and arsenic in order of decreasing electronegativity.
    S > As > Rb > Ca
    S > As > Ca > Rb
    As > S > Rb > Ca
    As > S > Ca > Rb
    None of these orders is correct
    S > As > Ca > Rb
  37. Based on electronegativity trends in the periodic table, predict which of the following compounds will have the greatest % ionic character in its bonds.
    H2O, LiI, CaO, RbF, HCl
    RbF
  38. The total number of bonding electrons in a molecule of formaldehyde (H2CO) is
    3, 4, 6, 8,18
    8
  39. The total number of lone pairs in NCl3 is.
    6, 8, 9, 10, 13
    10

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