Question 1

Which of the following covalent bonds has the largest dipole moment?

Accepted Answer

A) C-C 
B) C-H 
C) C-O 
D) H-N 
E) H-F 
A) C-C 
B) C-H 
C) C-O 
D) H-N 
E) H-F

Question 2

How many distinct and degenerate p orbitals exist in the second electron shell,where n = 2?

Accepted Answer

A) 0 
B) 1 
C) 2 
D) 3 
E) 4 
A) 0 
B) 1 
C) 2 
D) 3 
E) 4

Question 3

Atoms with the same number of protons but different numbers of neutrons are called ________.

Accepted Answer

The answer of Atoms with the same number of protons...

Question 4

Identify the compound with the weakest bond.

Accepted Answer

A) H2 
B) HF 
C) HCl 
D) HBr 
E) HI 
A) H2 
B) HF 
C) HCl 
D) HBr 
E) HI

Question 5

Draw the Lewis structure for CH3N2+.

Accepted Answer

Question 6

What kind of molecular orbital (σ,σ*,π,or π*)results when the two atomic orbitals shown below interact in the manner indicated?

Accepted Answer

The answer of What kind of molecular orbital (σ,σ*,π,or π*)results...

Question 7

The hydrogen-halogen bond becomes ________ and ________ as the size (atomic weight)of the halogen increases.

Accepted Answer

A) longer,weaker 
B) longer,stronger 
C) shorter,weaker 
D) shorter,stronger 
A) longer,weaker 
B) longer,stronger 
C) shorter,weaker 
D) shorter,stronger

Question 8

Consider the interaction of two hydrogen 1s atomic orbitals of the same phase.Which of the statements below is an incorrect description of this interaction?

Accepted Answer

A) A sigma bonding molecular orbital is formed. 
B) The molecular orbital formed is lower in energy than a hydrogen 1s atomic orbital. 
C) The molecular orbital formed has a node between the atoms. 
D) The molecular orbital formed is cylindrically symmetric. 
E) A maximum of two electrons may occupy the molecular orbital formed. 
A) A sigma bonding molecular orbital is formed. 
B) The molecular orbital formed is lower in energy than a hydrogen 1s atomic orbital. 
C) The molecular orbital formed has a node between the atoms. 
D) The molecular orbital formed is cylindrically symmetric. 
E) A maximum of two electrons may occupy the molecular orbital formed.

Question 9

A molecule of acetonitrile CH3CN contains ________ sigma bonds and ________ pi bonds.

Accepted Answer

A) 5,2 
B) 4,3 
C) 4,2 
D) 2,2 
E) 4,0 
A) 5,2 
B) 4,3 
C) 4,2 
D) 2,2 
E) 4,0

Question 10

The N-H single bond in methyl amine (CH3NH2)is a ________ bond formed by the overlap of a(n)________ orbital on N and a(n)________ orbital on H.

Accepted Answer

A) σ; sp2; s 
B) σ ; sp3; s 
C) π ; sp3; s 
D) π ; sp2; p 
E) π ; p ; p 
A) σ; sp2; s 
B) σ ; sp3; s 
C) π ; sp3; s 
D) π ; sp2; p 
E) π ; p ; p

Question 11

What kind of molecular orbital (σ,σ*,π,or π*)results when the two atomic orbitals shown below interact in the manner indicated?

Accepted Answer

The answer of What kind of molecular orbital (σ,σ*,π,or π*)results...

Question 12

Which of the following elements does this electronic configuration represent? 1s2 2s2 2p5

Accepted Answer

A) F 
B) C 
C) N 
D) Al 
E) O 
A) F 
B) C 
C) N 
D) Al 
E) O

Question 13

Each lone pair of electrons on the O atom in methanol (CH3OH)occupies a(n)________ orbital.

Accepted Answer

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

Question 14

Propanal is a compound detected on the surface of comet 67P by the Philae Lander.How many atoms sp2 hybridized atoms are in this molecule?

Accepted Answer

A) 0 
B) 1 
C) 2 
D) 3 
E) 4 
A) 0 
B) 1 
C) 2 
D) 3 
E) 4

Question 15

How many nonbonding electron pairs,bonding electron pairs,pi bonds,and sigma bonds are present in CO2?

Accepted Answer

4 nonbonding electro

Question 16

Give the hybridizations of the carbons,from left to right,in CH3CH   CHCl.

Accepted Answer

Question 17

Give the electronic configuration for Ca+2.

Accepted Answer

Question 18

Which carbon(s)in the following molecule is (are)sp hybridized?

Accepted Answer

A) carbon 1 
B) carbon 2 
C) carbons 1,3 
D) carbons 4 
E) carbons 4,5 
A) carbon 1 
B) carbon 2 
C) carbons 1,3 
D) carbons 4 
E) carbons 4,5

Question 19

The formal charge on nitrogen in the compound below is

Accepted Answer

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

Question 20

What orbitals overlap to create the H-C bond in CH3+?

Accepted Answer

A) sp3-sp3 
B) sp2-sp3 
C) s-p 
D) s-sp2 
E) s-sp3 
A) sp3-sp3 
B) sp2-sp3 
C) s-p 
D) s-sp2 
E) s-sp3

Exam 1: Remembering General Chemistry: Electronic Structure and Bonding

Which of the following covalent bonds has the largest dipole moment?

How many distinct and degenerate p orbitals exist in the second electron shell,where n = 2?

Atoms with the same number of protons but different numbers of neutrons are called ________.

Identify the compound with the weakest bond.

Draw the Lewis structure for CH3N2+.

What kind of molecular orbital (σ,σ*,π,or π*)results when the two atomic orbitals shown below interact in the manner indicated?

The hydrogen-halogen bond becomes ________ and ________ as the size (atomic weight)of the halogen increases.

Consider the interaction of two hydrogen 1s atomic orbitals of the same phase.Which of the statements below is an incorrect description of this interaction?

A molecule of acetonitrile CH3CN contains ________ sigma bonds and ________ pi bonds.

The N-H single bond in methyl amine (CH3NH2)is a ________ bond formed by the overlap of a(n)________ orbital on N and a(n)________ orbital on H.

What kind of molecular orbital (σ,σ*,π,or π*)results when the two atomic orbitals shown below interact in the manner indicated?

Which of the following elements does this electronic configuration represent? 1s2 2s2 2p5

Each lone pair of electrons on the O atom in methanol (CH3OH)occupies a(n)________ orbital.

Propanal is a compound detected on the surface of comet 67P by the Philae Lander.How many atoms sp2 hybridized atoms are in this molecule?

How many nonbonding electron pairs,bonding electron pairs,pi bonds,and sigma bonds are present in CO2?

Give the hybridizations of the carbons,from left to right,in CH3CH CHCl.

Give the electronic configuration for Ca+2.

Which carbon(s)in the following molecule is (are)sp hybridized?

The formal charge on nitrogen in the compound below is

What orbitals overlap to create the H-C bond in CH3+?

Acids and Bases: Central to Understanding Organic Chemistry

An Introduction to Organic Compounds: Nomenclature, physical Properties, and Structure

Isomers: the Arrangement of Atoms in Space

Alkenes: Structure,nomenclature,and an Introduction to Reactivity - Thermodynamics and Kinetics

The Reactions of Alkenes - the Stereochemistry of Addition Reactions

The Reactions of Alkynes - Introduction to Multistep Synthesis

Delocalized Electrons: Their Effect on Stability, pka, and the Products of a Reaction - Aromaticity and Electronic Effects: an Introduction to the Reactions of Benzene

Substitution and Elimination Reactions of Alkyl Halides

Reactions of Alcohols, ethers, epoxides, amines and Sulfur-Containing Compounds

Organometallic Compounds

Radicals

Mass Spectrometry,infrared Spectroscopy,and Uvvis Spectroscopy

Nmr Spectroscopy

Reactions of Carboxylic Acids and Carboxylic Acid Derivatives

Reactions of Aldehydes and Ketones

Reactions at the Α-Carbon

Reactions of Benzene and Substituted Benzenes

More About Amines - Reactions of Heterocylic Compounds

The Organic Chemistry of Carbohydrates

Amino Acids,peptides,and Proteins

Catalysis in Organic Reactions and in Enzymatic Reactions

The Organic Chemistry of the Coenzymes, compounds Derived From Vitamins

The Organic Chemistry of the Metabolic Pathways

The Organic Chemistry of Lipids

The Chemistry of the Nucleic Acids

Synthetic Polymers

Pericyclic Reactions

Filters

Draw the Lewis structure for CH₃N₂⁺.

What kind of molecular orbital (σ,σ,π,or π)results when the two atomic orbitals shown below interact in the manner indicated?

The hydrogen-halogen bond becomes and as the size (atomic weight)of the halogen increases.

A molecule of acetonitrile CH₃CN contains sigma bonds and pi bonds.

The N-H single bond in methyl amine (CH₃NH₂)is a bond formed by the overlap of a(n) orbital on N and a(n) orbital on H.

What kind of molecular orbital (σ,σ,π,or π)results when the two atomic orbitals shown below interact in the manner indicated?

Which of the following elements does this electronic configuration represent? 1s² 2s² 2p⁵

Each lone pair of electrons on the O atom in methanol (CH₃OH)occupies a(n)________ orbital.

Propanal is a compound detected on the surface of comet 67P by the Philae Lander.How many atoms sp²hybridized atoms are in this molecule?

How many nonbonding electron pairs,bonding electron pairs,pi bonds,and sigma bonds are present in CO₂?

Give the hybridizations of the carbons,from left to right,in CH₃CH CHCl.

Give the electronic configuration for Ca⁺².

What orbitals overlap to create the H-C bond in CH₃⁺?