Question 1

The following valence molecular orbital energy level diagram is appropriate for which one of the listed species? A) B₂²⁺ B) C₂²⁺ C) N₂²⁺ D) O₂²⁺ E) F₂²⁺

Accepted Answer

The answer of The following valence molecular orbital energy level...

Question 2

In the NO₂^- ion,each atom can be viewed as sp² hybridized.Thus,each atom has one remaining unhybridized p orbital.How many $\pi$_2p molecular orbitals (including both bonding and antibonding orbitals)are formed using the unhybridized p orbitals? A) 1 B) 3 C) 4 D) 6 E) 12

Accepted Answer

Each unhybridized p orbital can form a π molecular orbital with the adjacent atom's unhybridized p orbital. There are three pairs of adjacent atoms in the ion (N-O, N-B, B-S), so there will be three π molecular orbitals formed, one bonding and two antibonding. Therefore, the answer is 3.

Question 3

SF₃⁺,has a tetrahedral electron-pair geometry and a trigonal-pyramidal molecular geometry.The hybridization of the central sulfur atom is ________.

Accepted Answer

The answer of SF₃⁺,has a tetrahedral electron-pair geometry and a...

Question 4

In valence bond theory,each sigma bond in CH₄ is formed from the overlap of a hydrogen atom's 1s orbital with a(n)________ hybridized orbital on the carbon atom.

Accepted Answer

The answer of In valence bond theory,each sigma bond in...

Question 5

The hybridization of the carbon atom in CF₃⁺ is ________.

Accepted Answer

The answer of The hybridization of the carbon atom in...

Question 6

In HF₂^- the hydrogen is shared between the two fluorine atoms.Which theory,valence bond or molecule orbital,correctly accounts for this three-center bonding?

Accepted Answer

The answer of In HF₂^- the hydrogen is shared between...

Question 7

In molecular orbital theory,the bond order is defined as 1/2 $\times$ (the number of electrons in ________ orbitals minus the number of electrons in antibonding orbitals).

Accepted Answer

The answer of In molecular orbital theory,the bond order is...

Question 8

Draw a Lewis structure of xenon trioxide.What is the hybridization of the xenon atom in this molecule?

Accepted Answer

The answer of Draw a Lewis structure of xenon trioxide.What...

Question 9

Which molecule will have the following valence molecular orbital energy level diagram? A) Be₂ B) B₂ C) C₂ D) N₂ E) O₂

Accepted Answer

Based on the given valence molecular orbital energy level diagram, the molecule must have two occupied bonding molecular orbitals (BMO) and one occupied antibonding molecular orbital (ABMO). The only option that matches this criteria is option B, which represents the molecule that has one sulfur and one boron atom (B₂). None of the other options have the correct number and arrangement of occupied molecular orbitals.

Question 10

Which diatomic molecule or ion has valence electron molecular orbital configuration provided below? [core electrons]($\sigma$_2s)²($\sigma$*_2s)²($\sigma$_2p)²($\pi$_2p)⁴($\pi$*_2p)¹ A) C₂ B) O₂⁺ C) O₂⁺. D) Ne₂ E) H₂

Accepted Answer

The molecular orbital configuration provided has a total of 14 valence electrons, which is the same as the number of valence electrons in the ion O₂F1F1F1S1^F1F1F10. This ion has a total of 6 sigma bonds and 2 pi bonds, which matches the bonding picture in the provided molecular orbital configuration. None of the other choices match the provided configuration.

Question 11

Benzene,C₆H₆,consists of a six member ring of sp² hybridized carbon atoms.Each carbon atom has one unhybridized p orbital.How many $\pi$_2p bonding,antibonding,and nonbonding molecular orbitals exist for benzene? A) Three $\pi$_2p molecular orbitals exist; two bonding and one antibonding. B) Three $\pi$_2p molecular orbitals exist; one bonding,one antibonding,and one nonbonding. C) Six $\pi$_2p molecular orbitals exist; three bonding and three antibonding. D) Six $\pi$_2p molecular orbitals exist; two bonding,two nonbonding,and two antibonding. E) Twelve $\pi$_2p molecular orbitals exist; six bonding and six antibonding.

Accepted Answer

Benzene has a total of six π electrons in its π system, which means it has six π molecular orbitals (MOs). These six MOs can be classified as bonding or antibonding based on their symmetry and energy.

Three of these MOs have lower energy than the original p orbitals, so they are bonding MOs. The remaining three have higher energy than the original p orbitals, so they are antibonding MOs.

Therefore, the correct answer is C, with three bonding and three antibonding π MOs.

Question 12

Which theory,valence bond or molecule orbital,correctly predicts the existence of paramagnetic molecules?

Accepted Answer

The answer of Which theory,valence bond or molecule orbital,correctly predicts...

Quiz 10: Bonding and Molecular Structure: Orbital Hybridization and Molecular Orbitals

The following valence molecular orbital energy level diagram is appropriate for which one of the listed species?

In the NO₂^- ion,each atom can be viewed as sp² hybridized.Thus,each atom has one remaining unhybridized p orbital.How many $\pi$ _2p molecular orbitals (including both bonding and antibonding orbitals) are formed using the unhybridized p orbitals?

SF₃⁺,has a tetrahedral electron-pair geometry and a trigonal-pyramidal molecular geometry.The hybridization of the central sulfur atom is ________.

In valence bond theory,each sigma bond in CH₄ is formed from the overlap of a hydrogen atom's 1s orbital with a(n)________ hybridized orbital on the carbon atom.

The hybridization of the carbon atom in CF₃⁺ is ________.

In HF₂^- the hydrogen is shared between the two fluorine atoms.Which theory,valence bond or molecule orbital,correctly accounts for this three-center bonding?

In molecular orbital theory,the bond order is defined as 1/2 $\times$ (the number of electrons in ________ orbitals minus the number of electrons in antibonding orbitals).

Draw a Lewis structure of xenon trioxide.What is the hybridization of the xenon atom in this molecule?

Which molecule will have the following valence molecular orbital energy level diagram?

Which diatomic molecule or ion has valence electron molecular orbital configuration provided below? [core electrons]( $\sigma$ _2s) ²( $\sigma$ _2s) ²( $\sigma$ _2p) ²( $\pi$ _2p) ⁴( $\pi$ _2p) ¹

Benzene,C₆H₆,consists of a six member ring of sp² hybridized carbon atoms.Each carbon atom has one unhybridized p orbital.How many $\pi$ _2p bonding,antibonding,and nonbonding molecular orbitals exist for benzene?

Which theory,valence bond or molecule orbital,correctly predicts the existence of paramagnetic molecules?

Quiz 10: Bonding and Molecular Structure: Orbital Hybridization and Molecular Orbitals

The following valence molecular orbital energy level diagram is appropriate for which one of the listed species?

In the NO2- ion,each atom can be viewed as sp2 hybridized.Thus,each atom has one remaining unhybridized p orbital.How many π\piπ 2p molecular orbitals (including both bonding and antibonding orbitals) are formed using the unhybridized p orbitals?

SF3+,has a tetrahedral electron-pair geometry and a trigonal-pyramidal molecular geometry.The hybridization of the central sulfur atom is ________.

In valence bond theory,each sigma bond in CH4 is formed from the overlap of a hydrogen atom's 1s orbital with a(n)________ hybridized orbital on the carbon atom.

The hybridization of the carbon atom in CF3+ is ________.

In HF2- the hydrogen is shared between the two fluorine atoms.Which theory,valence bond or molecule orbital,correctly accounts for this three-center bonding?

In molecular orbital theory,the bond order is defined as 1/2 ×\times× (the number of electrons in ________ orbitals minus the number of electrons in antibonding orbitals).

Draw a Lewis structure of xenon trioxide.What is the hybridization of the xenon atom in this molecule?

Which molecule will have the following valence molecular orbital energy level diagram?

Which diatomic molecule or ion has valence electron molecular orbital configuration provided below? [core electrons]( σ\sigmaσ 2s) 2( σ\sigmaσ *2s) 2( σ\sigmaσ 2p) 2( π\piπ 2p) 4( π\piπ *2p) 1

Benzene,C6H6,consists of a six member ring of sp2 hybridized carbon atoms.Each carbon atom has one unhybridized p orbital.How many π\piπ 2p bonding,antibonding,and nonbonding molecular orbitals exist for benzene?

Which theory,valence bond or molecule orbital,correctly predicts the existence of paramagnetic molecules?

In the NO₂^- ion,each atom can be viewed as sp² hybridized.Thus,each atom has one remaining unhybridized p orbital.How many $\pi$ _2p molecular orbitals (including both bonding and antibonding orbitals) are formed using the unhybridized p orbitals?

SF₃⁺,has a tetrahedral electron-pair geometry and a trigonal-pyramidal molecular geometry.The hybridization of the central sulfur atom is ________.

In valence bond theory,each sigma bond in CH₄ is formed from the overlap of a hydrogen atom's 1s orbital with a(n)________ hybridized orbital on the carbon atom.

The hybridization of the carbon atom in CF₃⁺ is ________.

In HF₂^- the hydrogen is shared between the two fluorine atoms.Which theory,valence bond or molecule orbital,correctly accounts for this three-center bonding?

In molecular orbital theory,the bond order is defined as 1/2 $\times$ (the number of electrons in ________ orbitals minus the number of electrons in antibonding orbitals).

Which diatomic molecule or ion has valence electron molecular orbital configuration provided below? [core electrons]( $\sigma$ _2s) ²( $\sigma$ _2s) ²( $\sigma$ _2p) ²( $\pi$ _2p) ⁴( $\pi$ _2p) ¹

Benzene,C₆H₆,consists of a six member ring of sp² hybridized carbon atoms.Each carbon atom has one unhybridized p orbital.How many $\pi$ _2p bonding,antibonding,and nonbonding molecular orbitals exist for benzene?