Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Atomic Structure
The basic structure of an atom is defined as the component-level of atomic structure of an atom. Precisely speaking an atom consists of three major subatomic particles which are protons, neutrons, and electrons. Many theories have been stated for explaining the structure of an atom.
Shape of the D Orbital
Shapes of orbitals are an approximate representation of boundaries in space for finding electrons occupied in that respective orbital. D orbitals are known to have a clover leaf shape or dumbbell inside where electrons can be found.
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Transcribed Image Text:**Transcription for Educational Website:**
Consider the following sketches (1-8) representing molecular orbitals (MOs) obtained by combining the s and p atomic orbitals on two atoms. As usual, the white and grey lobes correspond to the opposite signs of the wavefunctions.
**Sketch Descriptions:**
1. **(1)**: Two circles overlapping, with areas of different shading (white and grey) indicating opposite signs of wavefunctions.
2. **(2)**: A circle overlapping with a pair of lobes, one white and one grey.
3. **(3)**: Two vertically elongated lobes, with one lobe shaded white and the other grey.
4. **(4)**: A diagram showing two lobes connected by a bridge, with different shading.
5. **(5)**: Two overlapping circles, with shading indicating opposite wavefunction signs.
6. **(6)**: A circle overlapping a pair of lobes, similarly shaded as in sketch (2).
7. **(7)**: Two vertically elongated lobes, similar to sketch (3), with shading to show opposite signs.
8. **(8)**: Two lobes connected by a central bridge, with different shadings on each side.
**Question:**
Which of the above sketches correspond to π (pi) character MOs? Count both π and π* as pi-character.
**Answer Options:**
- ○ 1, 2, 7, 8
- ○ 3, 4, 7, 8
- ○ 3, 7
- ○ 1, 7, 8
- ○ 4, 5, 6
**Explanation:**
Identify the sketches that represent molecular orbitals with π (pi) character, which involve side-to-side overlap of atomic orbitals, typical for p orbitals. Both bonding (π) and antibonding (π*) interactions should be considered.
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