Question 1

Determine the electron geometry (eg)and molecular geometry (mg)of H2CO.

Accepted Answer

A)  eg = tetrahedral, mg = trigonal planar 
B)  eg = linear, mg = trigonal planar 
C)  eg = trigonal planar, mg = tetrahedral 
D)  eg = linear, mg = tetrahedral 
E)  eg = trigonal planar, mg = trigonal planar 
A)  eg = tetrahedral, mg = trigonal planar 
B)  eg = linear, mg = trigonal planar 
C)  eg = trigonal planar, mg = tetrahedral 
D)  eg = linear, mg = tetrahedral 
E)  eg = trigonal planar, mg = trigonal planar

Question 2

Place the following in order of increasing F-A-F bond angle,where A represents the central atom in each molecule. PF3 OF2 PF4⁺

Accepted Answer

A)  PF3 2 4⁺ 
B)  OF2 3  4⁺ 
C)  OF2 4⁺ 3 
D)  PF4⁺ 2 3 
E)  PF4⁺ 3 2 
A)  PF3 2 4⁺ 
B)  OF2 3  4⁺ 
C)  OF2 4⁺ 3 
D)  PF4⁺ 2 3 
E)  PF4⁺ 3 2

Question 3

Determine the electron geometry (eg)and molecular geometry (mg)of CO32⁻.

Accepted Answer

A)  eg = tetrahedral, mg = planar 
B)  eg = tetrahedral, mg = trigonal bipyramidal 
C)  eg = trigonal planar, mg = tetrahedral 
D)  eg = trigonal planar, mg = trigonal planar 
E)  eg = octahedral, mg = trigonal pyramidal 
A)  eg = tetrahedral, mg = planar 
B)  eg = tetrahedral, mg = trigonal bipyramidal 
C)  eg = trigonal planar, mg = tetrahedral 
D)  eg = trigonal planar, mg = trigonal planar 
E)  eg = octahedral, mg = trigonal pyramidal

Question 4

A molecule,that is sp3d2 hybridized and has a molecular geometry of square planar,has ________ bonding groups and ________ lone pairs around its central atom.

Accepted Answer

A)  5, 1 
B)  4, 2 
C)  4, 1 
D)  3, 2 
E)  2, 3 
A)  5, 1 
B)  4, 2 
C)  4, 1 
D)  3, 2 
E)  2, 3

Determine the electron geometry (eg)and molecular geometry (mg)of H₂CO.

Place the following in order of increasing F-A-F bond angle,where A represents the central atom in each molecule. PF₃ OF₂ PF₄⁺

Determine the electron geometry (eg)and molecular geometry (mg)of CO₃²⁻.

A molecule,that is sp³d² hybridized and has a molecular geometry of square planar,has bonding groups and lone pairs around its central atom.

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Exam 10: Chemical Bonding Ii: Molecular Shapes,valence Bond Theory,