Question 1

Which type of bond is formed by the side-to-side overlap of two p orbitals, as shown in the red regions in the first image?

Accepted Answer

A pi ($$\pi) $$bond

Question 2

Refer to the second image showing the interaction energy of two hydrogen atoms. At which point is the bond length of H$$_2$$ found?

Accepted Answer

At the minimum of the energy curve

Question 3

In the third image, which orbitals on sulfur overlap with hydrogen 1s orbitals to form bonds in H$$_2S$$?

Accepted Answer

Sulfur 3p orbitals only

Question 4

Based on the fourth image, what is the approximate bond angle in H$$_2S$$, and what causes this angle?

Accepted Answer

$$90^\circ$$ due to p orbital overlap

Question 5

The fifth image shows the ground-state electron configuration for carbon. How many unpaired electrons does carbon have in this state?

Accepted Answer

2

Question 6

The sixth image compares theoretical and observed bond angles in methane (CH$$_4). $$What is the observed bond angle, and what hybridization explains this geometry?

Accepted Answer

$$109.5^\circ$$, sp$$^3$$ hybridization

Question 7

According to the seventh image, how many sp$$^3$$ hybrid orbitals are formed from one 2s and three 2p orbitals?

Accepted Answer

Four

Question 8

The eighth image shows the formation of sp$$^3$$ hybrid orbitals. What is the geometry associated with sp$$^3$$ hybridization?

Accepted Answer

Tetrahedral

Question 9

The ninth image shows the formation of sp$$^2$$ hybrid orbitals. How many unhybridized p orbitals remain after sp$$^2$$ hybridization?

Accepted Answer

One

Question 10

In the tenth image, which type of bond is formed by the overlap of a carbon sp$$^2$$ hybrid orbital and a hydrogen 1s orbital?

Accepted Answer

A sigma ($$\sigma) $$bond

Question 11

The eleventh image distinguishes between sigma and pi bonds. Which statement is correct?

Accepted Answer

Sigma bonds are formed by end-to-end overlap

Question 12

Based on the twelfth and thirteenth images, why is rotation restricted around a double bond?

Accepted Answer

Because of the presence of a pi bond

Question 13

The fourteenth image shows a triple bond in acetylene (C$$_2H$_2). $$How many pi bonds are present in a triple bond?

Accepted Answer

Two

Question 14

The fifteenth image shows the formation of sp hybrid orbitals. What is the bond angle associated with sp hybridization?

Accepted Answer

$$180^\circ$$

Question 15

The sixteenth and seventeenth images show the valence bond models for AsF$$_5$$ and SF$$_6. $$What is the hybridization of the central atom in SF$$_6$$?

Accepted Answer

sp$$^3d$^2$$

Question 16

According to the eighteenth image, what is the hybridization scheme for a molecule with a trigonal bipyramidal electron geometry?

Accepted Answer

sp$$^3d$$

Question 17

The nineteenth image shows the formation of molecular orbitals from two hydrogen 1s orbitals. What is the result of constructive interference between these orbitals?

Accepted Answer

A bonding molecular orbital ($$\sigma_{1s})$$

Question 18

The twentieth image shows the combination of two 2p$$_z$$ atomic orbitals. What type of molecular orbital is formed by their in-phase overlap?

Accepted Answer

A $$\sigma_{2p}$$ bonding orbital

Chemical Bonding II: Valence Bond Theory & Molecular Orbital Theory (CHEM 130 Chapter 6 Study Guide)

Study Guide - Practice Questions

Study Guide - Flashcards