Question 1

The geometry of the hybrid orbitals about a central atom with sp3d hybridization is:

Accepted Answer

A)  linear 
B)  trigonal planar 
C)  tetrahedral 
D)  bent 
E)  trigonal bipyramidal 
A)  linear 
B)  trigonal planar 
C)  tetrahedral 
D)  bent 
E)  trigonal bipyramidal

Question 2

More energy is required to break a bond with an order of 3/2 than is required to break a bond of order 2.

Accepted Answer

A) True 
 B)False

Question 3

Indicate the type of hybrid orbitals used by the central atom in BrF3.

Accepted Answer

A)  sp 
B)  sp2 
C)  sp3 
D)  sp3d 
E)  sp3d2 
A)  sp 
B)  sp2 
C)  sp3 
D)  sp3d 
E)  sp3d2

Question 4

N,N-diethyl-m-tolumide (DEET) is the active ingredient in many mosquito repellents. What is the hybridization state of the nitrogen atom in the structure of DEET shown below

Accepted Answer

A)  sp 
B)  sp2 
C)  sp3 
D)  sp3d 
E)  sp3d2 
A)  sp 
B)  sp2 
C)  sp3 
D)  sp3d 
E)  sp3d2

Question 5

The hybridization of B in the BF3 molecule is sp3.

Accepted Answer

A) True 
 B)False

Question 6

The number of pi bonds in the oxalate ion (C2O42-) is

Accepted Answer

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

Question 7

N,N-diethyl-m-tolumide (DEET) is the active ingredient in many mosquito repellents. What is the hybridization state of carbon indicated by the arrow in the structure of DEET shown below

Accepted Answer

A)  sp 
B)  sp2 
C)  sp3 
D)  sp3d 
E)  sp3d2 
A)  sp 
B)  sp2 
C)  sp3 
D)  sp3d 
E)  sp3d2

Question 8

The geometry of the hybrid orbitals of the central atom of a molecule is always the same as molecular geometry.

Accepted Answer

A) True 
 B)False

Question 9

The hybridization of the central nitrogen atom in the molecule N2O is

Accepted Answer

A) sp. 
B)  sp2. 
C)  sp3. 
D)  sp3d. 
E)  sp3d2. 
A) sp. 
B)  sp2. 
C)  sp3. 
D)  sp3d. 
E)  sp3d2.

Question 10

In which of the following would the bonding be strengthened with the addition of an electron to form the negative molecular ion

Accepted Answer

A)  N2 
B)  O2 
C)  F2 
D)  all of these 
E)  none of these 
A)  N2 
B)  O2 
C)  F2 
D)  all of these 
E)  none of these

Question 11

Indicate the type of hybrid orbitals used by the central atom in SF6.

Accepted Answer

A)  sp 
B)  sp2 
C)  sp3 
D)  sp3d 
E)  sp3d2 
A)  sp 
B)  sp2 
C)  sp3 
D)  sp3d 
E)  sp3d2

Question 12

Which of the following molecules has polar bonds but is a nonpolar molecule PCl5, PCl3, NCl3, CO2

Accepted Answer

A)  NCl3 and CO2 
B)  PCl5 and CO2 
C)  PCl3 and CO2 
D)  PCl5, PCl3, NCl3 and CO2 
E) None of the above 
A)  NCl3 and CO2 
B)  PCl5 and CO2 
C)  PCl3 and CO2 
D)  PCl5, PCl3, NCl3 and CO2 
E) None of the above

Question 13

A central atom with 5 electron pairs (single bonds and/or lone pairs of electrons) could have which of the following molecular geometries
I. Trigonal bipyramidal
II. Seesaw
III. T-shaped
IV. Linear

Accepted Answer

A)  I, II, and III 
B)  II, III, and IV 
C)  I, III, and IV 
D)  I, II, and IV 
E)  I, II, III, and IV 
A)  I, II, and III 
B)  II, III, and IV 
C)  I, III, and IV 
D)  I, II, and IV 
E)  I, II, III, and IV

Question 14

A central atom with 4 electron pairs (single bonds and/or lone pairs of electrons) could have which of the following molecular geometries
I. Trigonal bipyramidal
II. Tetrahed ral
III. Trigonal pyramidal
IV. Bent

Accepted Answer

A)  I and II 
B)  II and III 
C)  II, III, and IV 
D)  I and IV 
E)  I, II, and IV 
A)  I and II 
B)  II and III 
C)  II, III, and IV 
D)  I and IV 
E)  I, II, and IV

Question 15

Give the number of lone pairs around the central atom and the molecular geometry of SCl2.

Accepted Answer

A)  0 lone pairs, linear 
B)  1 lone pair, bent 
C)  2 lone pairs, bent 
D)  3 lone pairs, bent 
E)  3 lone pairs, linear 
A)  0 lone pairs, linear 
B)  1 lone pair, bent 
C)  2 lone pairs, bent 
D)  3 lone pairs, bent 
E)  3 lone pairs, linear

Question 16

In VSEPR theory the molecular geometry of SF4 (sulfur tetrafluoride) is distorted tetrahedron (seesaw).

Accepted Answer

A) True 
 B)False

Question 17

The bond in O2 is shorter than the bond in O2+.

Accepted Answer

A) True 
 B)False

Question 18

A sp2 hybridized central atom has what angles between its hybrid orbitals

Accepted Answer

A)  145$\circ$ 
B)  120$\circ$ 
C)  109.5$\circ$ 
D)  90$\circ$ 
E)  $\circ$ 
A)  145$\circ$ 
B)  120$\circ$ 
C)  109.5$\circ$ 
D)  90$\circ$ 
E)  $\circ$

Question 19

Indicate the type of hybrid orbitals used by the central atom in PCl3.

Accepted Answer

A)  sp 
B)  sp2 
C)  sp3 
D)  sp3d 
E)  sp3d2 
A)  sp 
B)  sp2 
C)  sp3 
D)  sp3d 
E)  sp3d2

Question 20

What is the bond order of CO+

Accepted Answer

A)  1 
B)  1.5 
C)  2 
D)  2.5 
E)  3 
A)  1 
B)  1.5 
C)  2 
D)  2.5 
E)  3

Exam 10: Chemical Bonding II: Molecular Geometry and Hybridization of Atomic

The geometry of the hybrid orbitals about a central atom with sp3d hybridization is:

More energy is required to break a bond with an order of 3/2 than is required to break a bond of order 2.

Indicate the type of hybrid orbitals used by the central atom in BrF3.

N,N-diethyl-m-tolumide (DEET) is the active ingredient in many mosquito repellents. What is the hybridization state of the nitrogen atom in the structure of DEET shown below

The hybridization of B in the BF3 molecule is sp3.

The number of pi bonds in the oxalate ion (C2O42-) is

N,N-diethyl-m-tolumide (DEET) is the active ingredient in many mosquito repellents. What is the hybridization state of carbon indicated by the arrow in the structure of DEET shown below

The geometry of the hybrid orbitals of the central atom of a molecule is always the same as molecular geometry.

The hybridization of the central nitrogen atom in the molecule N2O is

In which of the following would the bonding be strengthened with the addition of an electron to form the negative molecular ion

Indicate the type of hybrid orbitals used by the central atom in SF6.

Which of the following molecules has polar bonds but is a nonpolar molecule PCl5, PCl3, NCl3, CO2

A central atom with 5 electron pairs (single bonds and/or lone pairs of electrons) could have which of the following molecular geometries I. Trigonal bipyramidal II. Seesaw III. T-shaped IV. Linear

A central atom with 4 electron pairs (single bonds and/or lone pairs of electrons) could have which of the following molecular geometries I. Trigonal bipyramidal II. Tetrahed ral III. Trigonal pyramidal IV. Bent

Give the number of lone pairs around the central atom and the molecular geometry of SCl2.

In VSEPR theory the molecular geometry of SF4 (sulfur tetrafluoride) is distorted tetrahedron (seesaw).

The bond in O2 is shorter than the bond in O2+.

A sp2 hybridized central atom has what angles between its hybrid orbitals

Indicate the type of hybrid orbitals used by the central atom in PCl3.

What is the bond order of CO+

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The geometry of the hybrid orbitals about a central atom with sp³d hybridization is:

Indicate the type of hybrid orbitals used by the central atom in BrF₃.

The hybridization of B in the BF₃ molecule is sp³.

The number of pi bonds in the oxalate ion (C₂O₄^2-) is

The hybridization of the central nitrogen atom in the molecule N₂O is

Indicate the type of hybrid orbitals used by the central atom in SF₆.

Which of the following molecules has polar bonds but is a nonpolar molecule PCl₅, PCl₃, NCl₃, CO₂

Give the number of lone pairs around the central atom and the molecular geometry of SCl₂.

In VSEPR theory the molecular geometry of SF₄ (sulfur tetrafluoride) is distorted tetrahedron (seesaw).

The bond in O₂ is shorter than the bond in O₂⁺.

A sp² hybridized central atom has what angles between its hybrid orbitals

Indicate the type of hybrid orbitals used by the central atom in PCl₃.

What is the bond order of CO⁺