Question 1

The bond angles in SF5+ are expected to be

Accepted Answer

A) 90°. 
B) 120°. 
C) 90° and 120°. 
D) 90° and 180°. 
E) 90°, 120°, and 180°. 
A) 90°. 
B) 120°. 
C) 90° and 120°. 
D) 90° and 180°. 
E) 90°, 120°, and 180°. E

Question 2

Predict the geometry around the central atom in XeO4.

Accepted Answer

A) trigonal planar 
B) trigonal pyramidal 
C) tetrahedral 
D) trigonal bipyramidal 
E) octahedral 
A) trigonal planar 
B) trigonal pyramidal 
C) tetrahedral 
D) trigonal bipyramidal 
E) octahedral C

Question 3

The bond angle in ICl2- is expected to be

Accepted Answer

A) a little less than 109.5°. 
B) 109.5°. 
C) a little more than 109.5°. 
D) 120°. 
E) 180°. 
A) a little less than 109.5°. 
B) 109.5°. 
C) a little more than 109.5°. 
D) 120°. 
E) 180°. E

Question 4

Use VSEPR theory to predict the molecular geometry of CO32-.

Accepted Answer

Question 5

According to the VSEPR theory, the molecular geometry of ammonia is

Accepted Answer

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

Question 6

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 7

Which of the following substance is/are planar? (i)SO3  (ii)SO32-  (iii)NO3-  (iv)PF3 (v)BF3

Accepted Answer

A) only (i)and (ii) 
B) only (i), (iii), and (v) 
C) only (iv) 
D) all are planar except (iv) 
E) all are planar except (ii) 
A) only (i)and (ii) 
B) only (i), (iii), and (v) 
C) only (iv) 
D) all are planar except (iv) 
E) all are planar except (ii)

Question 8

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 9

A species with a bond order of 1/2 may be stable.

Accepted Answer

A) True 
 B)False

Question 10

In which one of the following molecules is the central atom sp2 hybridized?

Accepted Answer

A) SO2 
B) N2O 
C) BeCl2 
D) NF3 
E) PF5 
A) SO2 
B) N2O 
C) BeCl2 
D) NF3 
E) PF5

Question 11

According to the VSEPR theory, the molecular geometry of SiCl4 is

Accepted Answer

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

Question 12

A bonding molecular orbital is of lower energy (more stable)than the atomic orbitals from which it was formed.

Accepted Answer

A) True 
 B)False

Question 13

Indicate the type of hybrid orbitals used by the central atom in TeF4.

Accepted Answer

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

Question 14

Which of the following molecules have the same geometries?

Accepted Answer

A) SF4 and CH4 
B) CO2 and H2O 
C) CO2 and BeH2 
D) N2O and NO2 
A) SF4 and CH4 
B) CO2 and H2O 
C) CO2 and BeH2 
D) N2O and NO2

Question 15

Give the number of lone pairs around the central atom and the geometry of the ion IBr2-.

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

Which one of the following molecules is polar?

Accepted Answer

A) PBr5 
B) CCl4 
C) BrF5 
D) XeF2 
E) XeF4 
A) PBr5 
B) CCl4 
C) BrF5 
D) XeF2 
E) XeF4

Question 17

According to VSEPR theory, which of the following triatomic ions should be linear: N3-, I3-, NO2-, ClO2-, SCN-?

Accepted Answer

N₃^-, I₃^-, and

Question 18

Give the number of lone pairs around the central atom and the geometry of the ion SeO42-.

Accepted Answer

A) 0 lone pairs, square planar 
B) 0 lone pairs, tetrahedral 
C) 1 lone pair, distorted tetrahedron (seesaw) 
D) 1 lone pair, square pyramidal 
E) 2 lone pairs, square planar 
A) 0 lone pairs, square planar 
B) 0 lone pairs, tetrahedral 
C) 1 lone pair, distorted tetrahedron (seesaw) 
D) 1 lone pair, square pyramidal 
E) 2 lone pairs, square planar

Question 19

In which of the following would the bonding be weakened 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 20

The N - N - H bond angles in hydrazine N2H4 are 112°. What is the hybridization of the nitrogen orbitals predicted by valence bond theory?

Accepted Answer

Exam 10: Chemical Bonding Ii: Molecular Geometry and Hybridization of Atomic Orbitals

The bond angles in SF5+ are expected to be

Predict the geometry around the central atom in XeO4.

The bond angle in ICl2- is expected to be

Use VSEPR theory to predict the molecular geometry of CO32-.

According to the VSEPR theory, the molecular geometry of ammonia is

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

Which of the following substance is/are planar? (i)SO3 (ii)SO32- (iii)NO3- (iv)PF3 (v)BF3

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

A species with a bond order of 1/2 may be stable.

In which one of the following molecules is the central atom sp2 hybridized?

According to the VSEPR theory, the molecular geometry of SiCl4 is

A bonding molecular orbital is of lower energy (more stable)than the atomic orbitals from which it was formed.

Indicate the type of hybrid orbitals used by the central atom in TeF4.

Which of the following molecules have the same geometries?

Give the number of lone pairs around the central atom and the geometry of the ion IBr2-.

Which one of the following molecules is polar?

According to VSEPR theory, which of the following triatomic ions should be linear: N3-, I3-, NO2-, ClO2-, SCN-?

Give the number of lone pairs around the central atom and the geometry of the ion SeO42-.

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

The N - N - H bond angles in hydrazine N2H4 are 112°. What is the hybridization of the nitrogen orbitals predicted by valence bond theory?

Introduction

Atoms, Molecules, and Ions

Stoichiometry

Reactions in Aqueous Solution

Gases

Energy Relationships in Chemical Reactions

The Electronic Structure of Atoms

The Periodic Table

Chemical Bonding I: the Covalent Bond

Introduction to Organic Chemistry

Intermolecular Forces and Liquids and Solids

Physical Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Acid-Base Equilibria and Solubility Equilibria

Thermodynamics

Redox Reactions and Electrochemistry

The Chemistry of Coordination Compounds

Nuclear Chemistry

Organic Polymerssynthetic and Natural

Filters

The bond angles in SF₅⁺ are expected to be

Predict the geometry around the central atom in XeO₄.

The bond angle in ICl₂^- is expected to be

Use VSEPR theory to predict the molecular geometry of CO₃^2-.

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

Which of the following substance is/are planar? (i)SO₃ (ii)SO₃^2- (iii)NO₃^- (iv)PF₃ (v)BF₃

In which one of the following molecules is the central atom sp² hybridized?

According to the VSEPR theory, the molecular geometry of SiCl₄ is

Indicate the type of hybrid orbitals used by the central atom in TeF₄.

Give the number of lone pairs around the central atom and the geometry of the ion IBr₂^-.

According to VSEPR theory, which of the following triatomic ions should be linear: N₃^-, I₃^-, NO₂^-, ClO₂^-, SCN^-?

Give the number of lone pairs around the central atom and the geometry of the ion SeO₄^2-.

The N - N - H bond angles in hydrazine N₂H₄ are 112°. What is the hybridization of the nitrogen orbitals predicted by valence bond theory?