Question 1

Which molecule or ion does not have a trigonal pyramidal molecular geometry?

Accepted Answer

A) AsF3 
B) NF3 
C) PF3 
D) BF3 
E) IO3- 
A) AsF3 
B) NF3 
C) PF3 
D) BF3 
E) IO3-

Question 2

Which molecule or ion does not have a trigonal pyramidal molecular geometry?

Accepted Answer

A) PO33- 
B) SO32- 
C) NI3 
D) BF3 
E) XeO3 
A) PO33- 
B) SO32- 
C) NI3 
D) BF3 
E) XeO3

Question 3

Which molecule or ion is not planar?

Accepted Answer

A) XeF4 
B) NO3- 
C) BCl3 
D) F2CCF2 
E) CF4 
A) XeF4 
B) NO3- 
C) BCl3 
D) F2CCF2 
E) CF4

Question 4

For which molecule or ion does the nitrogen atom have the positive end of the dipole moment?

Accepted Answer

A) NH4+ 
B) CN− 
C) NO 
D) HCN 
E) N2 
A) NH4+ 
B) CN− 
C) NO 
D) HCN 
E) N2

Question 5

How many sigma and pi bonds are in the molecule pictured below?

Accepted Answer

A) thirteen sigma bonds and one pi bond 
B) eleven sigma bonds and two pi bonds 
C) thirteen sigma bonds and two pi bonds 
D) eleven sigma bonds and five pi bonds 
E) five sigma bonds and eleven pi bonds 
A) thirteen sigma bonds and one pi bond 
B) eleven sigma bonds and two pi bonds 
C) thirteen sigma bonds and two pi bonds 
D) eleven sigma bonds and five pi bonds 
E) five sigma bonds and eleven pi bonds

Question 6

The molecular geometry of the ammonium ion,NH4+,is most similar to the molecular geometry of

Accepted Answer

A) NH3. 
B) CH4. 
C) N2H4. 
D) NH2-. 
E) CH3+. 
A) NH3. 
B) CH4. 
C) N2H4. 
D) NH2-. 
E) CH3+.

Question 7

The approximate H-C-C bond angle in ethane,C2H6,is

Accepted Answer

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

Question 8

Which molecule or ion has the highest bond order?

Accepted Answer

A) F2- 
B) O2 
C) O22- 
D) N2 
E) F2 
A) F2- 
B) O2 
C) O22- 
D) N2 
E) F2

Question 9

Which of the following species has(have)a bond order of 2?
1)NO-
2.O2
3.O2-

Accepted Answer

A) 1 only 
B) 3 only 
C) 2 only 
D) 1 and 3 
E) 1 and 2 
A) 1 only 
B) 3 only 
C) 2 only 
D) 1 and 3 
E) 1 and 2

Question 10

What is the molecular geometry around carbon atom C1?
​

Accepted Answer

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

Question 11

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 one single bond.

Accepted Answer

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

Question 12

What is the bond angle in a trigonal planar molecule or ion?

Accepted Answer

A) 109° 
B) 180° 
C) 90° 
D) 72° 
E) 120° 
A) 109° 
B) 180° 
C) 90° 
D) 72° 
E) 120°

Question 13

Which of the following statements best describes N2O?

Accepted Answer

A) The molecular geometry is bent and the molecule is nonpolar. 
B) The molecular geometry is linear and the molecule is nonpolar. 
C) The molecular geometry is linear and the molecule is polar. 
D) The molecular geometry is trigonal planar and the molecule is nonpolar. 
E) The molecular geometry is bent and the molecule is polar. 
A) The molecular geometry is bent and the molecule is nonpolar. 
B) The molecular geometry is linear and the molecule is nonpolar. 
C) The molecular geometry is linear and the molecule is polar. 
D) The molecular geometry is trigonal planar and the molecule is nonpolar. 
E) The molecular geometry is bent and the molecule is polar.

Question 14

Which molecule or ion is not planar?

Accepted Answer

A) H2CO 
B) NO2- 
C) C2F4 
D) H2CCO 
E) PO43- 
A) H2CO 
B) NO2- 
C) C2F4 
D) H2CCO 
E) PO43-

Question 15

Which molecule or ion has a trigonal planar molecular geometry?

Accepted Answer

A) PCl3 
B) HCN 
C) CO32- 
D) HCCH 
E) AsF3 
A) PCl3 
B) HCN 
C) CO32- 
D) HCCH 
E) AsF3

Question 16

Which of the following statements is incorrect regarding the water molecule?

Accepted Answer

A) There are two lone pairs and two bonding pairs on the central atom. 
B) The molecule is polar. 
C) The hybridization of oxygen is sp3. 
D) The hybridization of hydrogen is sp. 
E) The molecular geometry is bent. 
A) There are two lone pairs and two bonding pairs on the central atom. 
B) The molecule is polar. 
C) The hybridization of oxygen is sp3. 
D) The hybridization of hydrogen is sp. 
E) The molecular geometry is bent.

Question 17

The nitrosyl ion,NO+,has ten bonding electrons and four antibonding electrons.Therefore,it has a bond order of

Accepted Answer

A) 1. 
B) 5/2. 
C) 7. 
D) 2. 
E) 3. 
A) 1. 
B) 5/2. 
C) 7. 
D) 2. 
E) 3.

Question 18

What is the hybridization of the nitrogen atom in the nitrite ion?

Accepted Answer

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

Question 19

In ClF3,the electron pairs are arranged about the chlorine atom in

Accepted Answer

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

Question 20

Given the molecular orbital diagram for dinitrogen (N2)excluding the K shells below,which of the following molecules or ions is expected to be diamagnetic?

Accepted Answer

A) C22- 
B) O2 
C) B2 
D) O2- 
E) O2+ 
A) C22- 
B) O2 
C) B2 
D) O2- 
E) O2+

Exam 10: Molecular Geometry and Chemical Bonding Theory

Which molecule or ion does not have a trigonal pyramidal molecular geometry?

Which molecule or ion does not have a trigonal pyramidal molecular geometry?

Which molecule or ion is not planar?

For which molecule or ion does the nitrogen atom have the positive end of the dipole moment?

How many sigma and pi bonds are in the molecule pictured below?

The molecular geometry of the ammonium ion,NH4+,is most similar to the molecular geometry of

The approximate H-C-C bond angle in ethane,C2H6,is

Which molecule or ion has the highest bond order?

Which of the following species has(have)a bond order of 2? 1)NO- 2.O2 3.O2-

What is the molecular geometry around carbon atom C1? ​

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 one single bond.

What is the bond angle in a trigonal planar molecule or ion?

Which of the following statements best describes N2O?

Which molecule or ion is not planar?

Which molecule or ion has a trigonal planar molecular geometry?

Which of the following statements is incorrect regarding the water molecule?

The nitrosyl ion,NO+,has ten bonding electrons and four antibonding electrons.Therefore,it has a bond order of

What is the hybridization of the nitrogen atom in the nitrite ion?

In ClF3,the electron pairs are arranged about the chlorine atom in

Given the molecular orbital diagram for dinitrogen (N2)excluding the K shells below,which of the following molecules or ions is expected to be diamagnetic?

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

The molecular geometry of the ammonium ion,NH₄⁺,is most similar to the molecular geometry of

The approximate H-C-C bond angle in ethane,C₂H₆,is

Which of the following species has(have)a bond order of 2? 1)NO^-2.O₂3.O₂^-

What is the molecular geometry around carbon atom C₁?

Which of the following statements best describes N₂O?

The nitrosyl ion,NO⁺,has ten bonding electrons and four antibonding electrons.Therefore,it has a bond order of

In ClF₃,the electron pairs are arranged about the chlorine atom in

Given the molecular orbital diagram for dinitrogen (N₂)excluding the K shells below,which of the following molecules or ions is expected to be diamagnetic?