Question 1

Which of the following is the correct representation of partial charges at the indicated atoms?

Accepted Answer

A)  I = $\delta$+; II = $\delta$+; III = $\delta$+ 
B)  I = $\delta$-; II = $\delta$-; III = $\delta$- 
C)  I = $\delta$+; II = $\delta$+; III = $\delta$- 
D)  I =$\delta$-; II = $\delta$-; III = $\delta$+ 
E)  I = $\delta$+; II = $\delta$-; III = $\delta$+ 
A)  I = $\delta$+; II = $\delta$+; III = $\delta$+ 
B)  I = $\delta$-; II = $\delta$-; III = $\delta$- 
C)  I = $\delta$+; II = $\delta$+; III = $\delta$- 
D)  I =$\delta$-; II = $\delta$-; III = $\delta$+ 
E)  I = $\delta$+; II = $\delta$-; III = $\delta$+

Question 2

The atomic number for nitrogen is 7. Which of the following represents the ground state electron configuration for nitrogen?

Accepted Answer

A)  1s2 2s1 2p4 
B)  1s2 2p5 
C)  2s2 2p5 
D)  1s2 2s2 2p3 
E)  1s2 2s2 3s3 
A)  1s2 2s1 2p4 
B)  1s2 2p5 
C)  2s2 2p5 
D)  1s2 2s2 2p3 
E)  1s2 2s2 3s3

Question 3

Which element has the electron configuration 1s2 2s2 2p6 3s2 3p3?

Accepted Answer

A)  Cl 
B)  S 
C)  P 
D)  Al 
E)  N 
A)  Cl 
B)  S 
C)  P 
D)  Al 
E)  N

Question 4

Which is the shortest bond in the following compound?

Accepted Answer

A)  I 
B)  II 
C)  III 
D)  IV 
E)  I and III have the same length 
A)  I 
B)  II 
C)  III 
D)  IV 
E)  I and III have the same length

Question 5

The N-H bond in the following compound is a _____ and is formed from the _____.

Accepted Answer

A)  σ bond; sp2 - s orbital overlap 
B)  σ bond; sp3 - s orbital overlap 
C)  π bond; sp3 - s orbital overlap 
D)  π bond; sp2 - p orbital overlap 
E)  π bond; p - p orbital overlap 
A)  σ bond; sp2 - s orbital overlap 
B)  σ bond; sp3 - s orbital overlap 
C)  π bond; sp3 - s orbital overlap 
D)  π bond; sp2 - p orbital overlap 
E)  π bond; p - p orbital overlap

Question 6

Which of the following compounds have tetrahedral electron geometry?

Accepted Answer

A)  I, II and III 
B)  I, II, IV and V 
C)  III and IV and V 
D)  IV and V 
E)  All of these 
A)  I, II and III 
B)  I, II, IV and V 
C)  III and IV and V 
D)  IV and V 
E)  All of these

Question 7

The C2-C3 bond in the following compound results from the overlap of which orbitals?

Accepted Answer

A)  sp-sp2 
B)  sp-sp3 
C)  sp2-sp2 
D)  sp2-sp3 
E)  sp3-sp2 
A)  sp-sp2 
B)  sp-sp3 
C)  sp2-sp2 
D)  sp2-sp3 
E)  sp3-sp2

Question 8

Which of the following compounds have a dipole moment?

Accepted Answer

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

Question 9

Which orbitals are involved in the C-O, sigma bond in acetone, shown below?

Accepted Answer

A)  Csp2-Osp2 
B)  Csp3-Osp3 
C)  Csp-Osp 
D)  Cp-Op 
E)  Csp-Op 
A)  Csp2-Osp2 
B)  Csp3-Osp3 
C)  Csp-Osp 
D)  Cp-Op 
E)  Csp-Op

Question 10

Which of the following compounds have a net dipole moment?

Accepted Answer

A)  CBr4 
B)  CO2 
C)  CH4 
D)  H2O 
E)  C2H4 
A)  CBr4 
B)  CO2 
C)  CH4 
D)  H2O 
E)  C2H4

Question 11

What is the hybridization state of the carbon in CO2?

Accepted Answer

A)  sp 
B)  sp2 
C)  sp3 
D)  sp3d 
E)  s2p 
A)  sp 
B)  sp2 
C)  sp3 
D)  sp3d 
E)  s2p

Question 12

According to molecular orbital theory the lowest energy molecular orbital that is unoccupied with an electron is referred to as _______.

Accepted Answer

A)  degenerate 
B)  antibonding 
C)  the LCAO 
D)  the LUMO 
E)  the HOMO 
A)  degenerate 
B)  antibonding 
C)  the LCAO 
D)  the LUMO 
E)  the HOMO

Question 13

What is the hybridization state and molecular geometry around the carbon atom in CO2?

Accepted Answer

A)  sp, linear 
B)  sp2, trigonal planar 
C)  sp3, tetrahedral 
D)  sp3, trigonal pyramidal 
E)  sp2, trigonal pyramidal 
A)  sp, linear 
B)  sp2, trigonal planar 
C)  sp3, tetrahedral 
D)  sp3, trigonal pyramidal 
E)  sp2, trigonal pyramidal

Question 14

What is the formal charge on nitrogen in the following structure?

Accepted Answer

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

Question 15

What is the electronic configuration for the magnesium ion?

Accepted Answer

A)  1s2 2s2 2p63s2 
B)  1s2 2s2 2p6 
C)  1s2 2s22p4 
D)  1s2 2s22p63s1 
E)  1s2 2s2 2p63s22p2 
A)  1s2 2s2 2p63s2 
B)  1s2 2s2 2p6 
C)  1s2 2s22p4 
D)  1s2 2s22p63s1 
E)  1s2 2s2 2p63s22p2

Question 16

Rank the following compounds in decreasing order of boiling point.

Accepted Answer

A)  III > I > IV > II 
B)  II > IV > I > III 
C)  III > I > II > IV 
D)  IV > II > I > III 
E)  I > III > II > IV 
A)  III > I > IV > II 
B)  II > IV > I > III 
C)  III > I > II > IV 
D)  IV > II > I > III 
E)  I > III > II > IV

Question 17

Draw the Lewis structure for SOCl2 and predict the hybridization state, molecular geometry and approximate bond angle around the central atom.

Accepted Answer

@#IMG-DLM&_TB4454_00

Question 18

Which of the following series has the correct order of elements in increasing electronegativity?

Accepted Answer

A)  C < N < B < Br 
B)  P < N < As < F 
C)  Li < B < N < F 
D)  Cl < Cs < C < Co 
E)  Be < B < Ba < Br 
A)  C < N < B < Br 
B)  P < N < As < F 
C)  Li < B < N < F 
D)  Cl < Cs < C < Co 
E)  Be < B < Ba < Br

Question 19

What is the molecular geometry at the nitrogen atom in the following compound?

Accepted Answer

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

Question 20

Which element has the following electronic configuration?

Accepted Answer

A)  boron 
B)  carbon 
C)  silicon 
D)  nitrogen 
E)  fluorine 
A)  boron 
B)  carbon 
C)  silicon 
D)  nitrogen 
E)  fluorine

Exam 1: A Review of General Chemistry: Electrons, Bonds, and Molecular Properties

Which of the following is the correct representation of partial charges at the indicated atoms?

The atomic number for nitrogen is 7. Which of the following represents the ground state electron configuration for nitrogen?

Which element has the electron configuration 1s2 2s2 2p6 3s2 3p3?

Which is the shortest bond in the following compound?

The N-H bond in the following compound is a _____ and is formed from the _____.

Which of the following compounds have tetrahedral electron geometry?

The C2-C3 bond in the following compound results from the overlap of which orbitals?

Which of the following compounds have a dipole moment?

Which orbitals are involved in the C-O, sigma bond in acetone, shown below?

Which of the following compounds have a net dipole moment?

What is the hybridization state of the carbon in CO2?

According to molecular orbital theory the lowest energy molecular orbital that is unoccupied with an electron is referred to as _______.

What is the hybridization state and molecular geometry around the carbon atom in CO2?

What is the formal charge on nitrogen in the following structure?

What is the electronic configuration for the magnesium ion?

Rank the following compounds in decreasing order of boiling point.

Draw the Lewis structure for SOCl2 and predict the hybridization state, molecular geometry and approximate bond angle around the central atom.

Which of the following series has the correct order of elements in increasing electronegativity?

What is the molecular geometry at the nitrogen atom in the following compound?

Which element has the following electronic configuration?

Molecular Representations

Acids and Bases

Alkanes and Cycloalkanes

Stereoisomerism

Chemical Reactivity and Mechanisms

Alkyl Halides: Nucleophilic Substitution and Elimination Reactions

Addition Reactions of Alkenes

Alkynes

Radical Reactions

Synthesis

Alcohols and Phenols

Ethers and Epoxides; Thiols and Sulfides

Infrared Spectroscopy and Mass Spectrometry

Nuclear Magnetic Resonance Spectroscopy

Conjugated Pi Systems and Pericyclic Reactions

Aromatic Compounds

Aromatic Substitution Reactions

Aldehydes and Ketones

Carboxylic Acids and Their Derivatives

Alpha Carbon Chemistry: Enols and Enolates

Amines

Introduction to Organometallic Compounds

Carbohydrates

Amino Acids, Peptides, and Proteins

Lipids

Synthetic Polymers

Filters

Which element has the electron configuration 1s² 2s² 2p⁶ 3s² 3p³?

The N-H bond in the following compound is a _ and is formed from the _.

The C₂-C₃ bond in the following compound results from the overlap of which orbitals?

What is the hybridization state of the carbon in CO₂?

What is the hybridization state and molecular geometry around the carbon atom in CO₂?

Draw the Lewis structure for SOCl₂ and predict the hybridization state, molecular geometry and approximate bond angle around the central atom.