The two-center orbital picture that describes each of the two weak resonance contributors of 1, 3-butadiene is to be drawn. Concept introduction: Overlap of atomic orbitals (AOs) can be thought of as wave interference. It can be constructive or destructive. Constructive interference increases the electron density between the two nuclei (an antinode) and results in a molecular orbital (MO) of lower energy. The phases of the overlapping orbitals are the same in this case. Destructive interference reduces the electron density between the two nuclei and results in an MO of higher energy. The phases of such AOs are the opposite. Since the electron density between the two nuclei decreases, there is a node (or a nodal plane) between the two atoms. π MOs sometimes extend over three or more atoms. In this case, different combinations of constructive and destructive interference are possible. The overall bonding character and the energy depend on the number of nodes and antinodes. If there are more antinodes than nodes, the overall interaction is bonding, and energy is lowered. If there are more nodes than antinodes, the overall interaction is antibonding, and energy increases.

Question

These are in the wrong boxes. Why does the one on the left have a lower molar mass than the one on the right?

Answer 1

Question

Chapter 14, Problem 14.28P

Interpretation Introduction

Interpretation:

The two-center orbital picture that describes each of the two weak resonance contributors of 1, 3-butadiene is to be drawn.

Concept introduction:

Overlap of atomic orbitals (AOs) can be thought of as wave interference. It can be constructive or destructive. Constructive interference increases the electron density between the two nuclei (an antinode) and results in a molecular orbital (MO) of lower energy. The phases of the overlapping orbitals are the same in this case. Destructive interference reduces the electron density between the two nuclei and results in an MO of higher energy. The phases of such AOs are the opposite. Since the electron density between the two nuclei decreases, there is a node (or a nodal plane) between the two atoms.

π MOs sometimes extend over three or more atoms. In this case, different combinations of constructive and destructive interference are possible. The overall bonding character and the energy depend on the number of nodes and antinodes. If there are more antinodes than nodes, the overall interaction is bonding, and energy is lowered. If there are more nodes than antinodes, the overall interaction is antibonding, and energy increases.

Expert Solution & Answer

Trending nowThis is a popular solution!

See solution

Check out sample textbook solution

Students have asked these similar questions

These are in the wrong boxes. Why does the one on the left have a lower molar mass than the one on the right?

SYNTHESIS REACTIONS. For the following reactions, synthesize the given products from the given reactants. Multiple reactions/steps will be needed. For the one of the steps (ie reactions) in each synthesis, write out the mechanism for that reaction and draw an energy diagram showing the correct number of hills and valleys for that step's mechanism. CI b. a. Use acetylene (ethyne) and any alkyl halide as your starting materials Br C. d. "OH OH III. OH

Calculate the pH and the pOH of each of the following solutions at 25 °C for which the substances ionize completely: (a) 0.200 M HCl