Question 1

Which of the following characteristics does not apply to PF3?

Accepted Answer

A) has three σ bonds 
B) contains polar bonds 
C) polar molecule 
D) one lone pair of electrons on phosphorus 
E) trigonal planar 
A) has three σ bonds 
B) contains polar bonds 
C) polar molecule 
D) one lone pair of electrons on phosphorus 
E) trigonal planar

Question 2

What is the electron geometry (or electron arrangement)around an atom in a molecule or ion which is surrounded by three lone pairs of electrons and two single bonds.

Accepted Answer

A) trigonal bipyramidal 
B) see-saw or distorted tetrahedron 
C) T-shaped 
D) linear 
E) trigonal planar 
A) trigonal bipyramidal 
B) see-saw or distorted tetrahedron 
C) T-shaped 
D) linear 
E) trigonal planar

Question 3

Which molecule or ion is not planar?

Accepted Answer

A) CO32- 
B) Cl2CCCl2 
C) HNNH 
D) H3O+ 
E) F2CO 
A) CO32- 
B) Cl2CCCl2 
C) HNNH 
D) H3O+ 
E) F2CO

Question 4

What is the hybridization of Se in SeF6?

Accepted Answer

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

Question 5

Which of the following compounds is nonpolar?

Accepted Answer

A) H2S 
B) XeF2 
C) SO2 
D) N2O 
E) HCl 
A) H2S 
B) XeF2 
C) SO2 
D) N2O 
E) HCl

Question 6

Which molecule or ion does not have a tetrahedral molecular geometry?

Accepted Answer

A) BF4- 
B) NF4+ 
C) GeF4 
D) XeF4 
E) BeF42- 
A) BF4- 
B) NF4+ 
C) GeF4 
D) XeF4 
E) BeF42-

Question 7

In the hydronium ion,H3O+,the electron groups are arranged about the central oxygen atom in a

Accepted Answer

A) tetrahedron. 
B) square plane. 
C) pyramid. 
D) trigonal plane. 
E) bent structure. 
A) tetrahedron. 
B) square plane. 
C) pyramid. 
D) trigonal plane. 
E) bent structure.

Question 8

Which molecule does not have a planar molecular geometry?

Accepted Answer

A) SO3 
B) HCCH 
C) N2H4 
D) HNNH 
E) C2F4 
A) SO3 
B) HCCH 
C) N2H4 
D) HNNH 
E) C2F4

Question 9

In the I3- ion,how many electron groups surround the central atom?

Accepted Answer

A) 5 
B) 3 
C) 6 
D) 4 
E) 2 
A) 5 
B) 3 
C) 6 
D) 4 
E) 2

Question 10

Which of the following molecules has a dipole moment?

Accepted Answer

A) SO2 
B) CS2 
C) ClCCCCCl 
D) CCl4 
E) HCCH 
A) SO2 
B) CS2 
C) ClCCCCCl 
D) CCl4 
E) HCCH

Question 11

The molecule AX3,in which A is the central atom,is polar and obeys the octet rule; therefore,

Accepted Answer

A) A has two lone pairs. 
B) A has one lone pair. 
C) A has no lone pairs. 
D) A has four bonding pairs. 
E) A has three lone pairs. 
A) A has two lone pairs. 
B) A has one lone pair. 
C) A has no lone pairs. 
D) A has four bonding pairs. 
E) A has three lone pairs.

Question 12

In the ICl4- ion,the electron pairs are arranged around the central iodine atom in the shape of

Accepted Answer

A) a tetrahedron. 
B) an octahedron. 
C) a square plane. 
D) a trigonal bipyramid. 
E) a trigonal pyramid. 
A) a tetrahedron. 
B) an octahedron. 
C) a square plane. 
D) a trigonal bipyramid. 
E) a trigonal pyramid.

Question 13

Which of the labeled carbons (C1-C4)is/are sp-hybridized?
​

Accepted Answer

A) carbon three 
B) carbon one 
C) carbon two and four 
D) carbon two 
E) carbon one and three 
A) carbon three 
B) carbon one 
C) carbon two and four 
D) carbon two 
E) carbon one and three

Question 14

Given the molecular orbital diagram for dihydrogen (H2)below,what would be the bond order of He2+
?
​

Accepted Answer

A)    
B)    
C) 1 
D) 0 
E) 2 
A)    
B)    
C) 1 
D) 0 
E) 2

Question 15

The approximate CCO angle in acetone,   ,is

Accepted Answer

A) 180°. 
B) 90°. 
C) 109°. 
D) 60°. 
E) 120°. 
A) 180°. 
B) 90°. 
C) 109°. 
D) 60°. 
E) 120°.

Question 16

Which of the following molecules is nonpolar?

Accepted Answer

A) SF4 
B) PF5 
C) ClF3 
D) PF3 
E) CH2F2 
A) SF4 
B) PF5 
C) ClF3 
D) PF3 
E) CH2F2

Question 17

What is the molecular geometry around an atom in a molecule or ion which is surrounded by one lone pair of electrons and four single bonds.

Accepted Answer

A) see-saw or distorted tetrahedron 
B) trigonal bipyramidal 
C) linear 
D) T-shaped 
E) trigonal planar 
A) see-saw or distorted tetrahedron 
B) trigonal bipyramidal 
C) linear 
D) T-shaped 
E) trigonal planar

Question 18

Which molecule or ion is paramagnetic?

Accepted Answer

A) NO2+ 
B) OCN- 
C) NO2- 
D) NO 
E) SO3 
A) NO2+ 
B) OCN- 
C) NO2- 
D) NO 
E) SO3

Question 19

When an atom in a molecule or ion is described as sp3d1 hybridized,its molecular geometry is

Accepted Answer

A) trigonal bipyramidal. 
B) trigonal planar. 
C) linear. 
D) tetrahedral. 
E) octahedral. 
A) trigonal bipyramidal. 
B) trigonal planar. 
C) linear. 
D) tetrahedral. 
E) octahedral.

Question 20

What is the C-C-H bond angle in H2CCO?

Accepted Answer

A) 109° 
B) 180° 
C) 120° 
D) 144° 
E) 90° 
A) 109° 
B) 180° 
C) 120° 
D) 144° 
E) 90°

Exam 10: Molecular Geometry and Chemical Bonding Theory

Which of the following characteristics does not apply to PF3?

What is the electron geometry (or electron arrangement)around an atom in a molecule or ion which is surrounded by three lone pairs of electrons and two single bonds.

Which molecule or ion is not planar?

What is the hybridization of Se in SeF6?

Which of the following compounds is nonpolar?

Which molecule or ion does not have a tetrahedral molecular geometry?

In the hydronium ion,H3O+,the electron groups are arranged about the central oxygen atom in a

Which molecule does not have a planar molecular geometry?

In the I3- ion,how many electron groups surround the central atom?

Which of the following molecules has a dipole moment?

The molecule AX3,in which A is the central atom,is polar and obeys the octet rule; therefore,

In the ICl4- ion,the electron pairs are arranged around the central iodine atom in the shape of

Which of the labeled carbons (C1-C4)is/are sp-hybridized? ​

Given the molecular orbital diagram for dihydrogen (H2)below,what would be the bond order of He2+ ? ​

The approximate CCO angle in acetone, ,is

Which of the following molecules is nonpolar?

What is the molecular geometry around an atom in a molecule or ion which is surrounded by one lone pair of electrons and four single bonds.

Which molecule or ion is paramagnetic?

When an atom in a molecule or ion is described as sp3d1 hybridized,its molecular geometry is

What is the C-C-H bond angle in H2CCO?

Chemistry and Measurement

Atoms, molecules, and Ions

Calculations With Chemical Formulas and Equations

Chemical Reactions

The Gaseous State

Thermochemistry

Quantum Theory of the Atom

Electron Configurations and Periodicity

Ionic and Covalent Bonding

States of Matter; Liquids and Solids

Solutions

Rates of Reaction

Chemical Equilibrium

Acids and Bases

Acid-Base Equilibria

Solubility and Complex-Ion Equilibria

Thermodynamics and Equilibrium

Electrochemistry

Nuclear Chemistry

Chemistry of the Main-Group Metals

The Transition Elements and Coordination Compounds

Organic Chemistry

Polymer Materials: Synthetic and Biological

Filters

Which of the following characteristics does not apply to PF₃?

What is the hybridization of Se in SeF₆?

In the hydronium ion,H₃O⁺,the electron groups are arranged about the central oxygen atom in a

In the I₃^- ion,how many electron groups surround the central atom?

The molecule AX₃,in which A is the central atom,is polar and obeys the octet rule; therefore,

In the ICl₄^- ion,the electron pairs are arranged around the central iodine atom in the shape of

Which of the labeled carbons (C₁-C₄)is/are sp-hybridized?

Given the molecular orbital diagram for dihydrogen (H₂)below,what would be the bond order of He₂+ ?

When an atom in a molecule or ion is described as sp³d¹ hybridized,its molecular geometry is

What is the C-C-H bond angle in H₂CCO?