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1031 第四次化學會考考題影音講解  
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Outline:
 1.Give the approximate bond angle for a molecule with an octahedral shape.90° B) 120° C) 180° D) 105° E) 109.5°Ans:A
演講者: 洪國明
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演講日期: 2015-01-21
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00:22
Outline:
 1.2) Determine the electron geometry (eg) and molecular geometry (mg) of CO32-.A) eg=tetrahedral, mg=trigonal pyramidalB) eg=tetrahedral, mg=tetrahedralC) eg=trigonal planar, mg=bentD) eg=tetrahedral, mg=trigonal planarE) eg=trigonal planar, mg=trigonal planarAns:E
 2.3) The bond angle in NH3 is120° B) 95° C) 104.5° D) 107° E) 109.5°Ans:D
演講者: 洪國明
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演講日期: 2015-01-21
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01:37
Outline:
 1.3) The bond angle in NH3 is120° B) 95° C) 104.5° D) 107° E) 109.5°Ans:D
演講者: 洪國明
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演講日期: 2015-01-21
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00:38
Outline:
 1.4) Consider the molecule below. Determine the molecular geometry at each of the 2 labeled carbons.A) C1 = trigonal planar, C2 = tetrahedralB) C1 = trigonal pyramidal, C2 = see-sawC) C1 = tetrahedral, C2 = linearD) C1 = bent, C2 = trigonal planarE) C1 = trigonal planar, C2= bentAns:A
演講者: 洪國明
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演講日期: 2015-01-21
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00:46
Outline:
 1.5) Consider the molecule below. Determine the molecular geometry at each of the 3 labeled atoms.A) 1=trigonal planar, 2=tetrahedral, 3=tetrahedralB) 1=tetrahedral, 2=tetrahedral, 3=trigonal planarC) 1=trigonal planar, 2=trigonal pyramidal, 3=trigonal pyramidalD) 1=tetrahedral, 2=tetrahedral, 3=tetrahedralE) 1=trigonal planar, 2=tetrahedral, 3=trigonal pyramidalAns:E
演講者: 洪國明
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演講日期: 2015-01-21
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上傳者: energy4104
01:10
Outline:
 1.6) Place the following in order of increasing F-A-F bond angle, where A represents the central atom in each molecule.PF3 OF2 PF4+A) PF3 < OF2 < PF4+B) PF4+ < PF3 < OF2C) PF4+< OF2 < PF3D) OF2 < PF3 < PF4+E) OF2 < PF4+< PF3Ans:D
演講者: 洪國明
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演講日期: 2015-01-21
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上傳者: energy4104
01:36
Outline:
 1.7) How many of the following molecules are polar?BrCl3 CS2 SiF4 SO31 B) 2 C) 4 D) 0 E) 3Ans:A
演講者: 洪國明
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演講日期: 2015-01-21
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上傳者: energy4104
00:38
Outline:
 1.8) Place the following in order of increasing dipole moment.I. BCl3 II. BIF2 III. BClF2II < III < I B) I < II < III C) II < I < III D) I < III < II E) I < II = IIIAns:D
演講者: 洪國明
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上傳者: energy4104
01:33
Outline:
 1.9) Give the hybridization for the O in H3O+.sp B) sp3d2 C) sp3d D) sp3 E) sp2Ans:D
演講者: 洪國明
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演講日期: 2015-01-21
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00:41
Outline:
 1.10) Give the hybridization for the S in SF6.sp3d2 B) sp2 C) sp3d D) sp E) sp3Ans:A
演講者: 洪國明
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演講日期: 2015-01-21
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00:33
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