The following character table (accompanied by a molecule of the corresponding point group) has some missing information. 2 C3 3 C2 2 S3 3 ov X1 1 1 1 1 1 1 x2+ y?, z2 1 1 -1 1 1 -1 Rz E' 2 -1 2 -1 (x, y) (x2- y?, xy) A;" 1 X2 1 -1 -1 -1 Az" 1 1 -1 -1 -1 1 X3 BH; E" -1 -2 1 (Rx, Ry) (2х, yz) а. Based on symmetry labels and Mulliken symbols, what is the missing symmetry element? b. Provide the missing information in the table: i. X1 = ii. X2 = iii. X3 = С. For this point group, what is the symmetry of the following orbitals for an atom located along the main C3 axis? i. A px orbital: ii. A d? orbital: iii. A dxy orbital:

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## Character Table Analysis for Point Group Symmetry

### Missing Information in Character Table

The table below is a character table for a point group associated with a molecule (BH₃). Some information, including symmetry elements and functions, is missing and needs to be determined.

|      | E | 2 C₃ | 3 C₂ | ? | 2 S₃ | 3 σᵥ | Basis Functions |
|------|---|------|------|---|-----|------|-----------------|
| X₁   | 1 | 1    | 1    | 1 | 1   | 1    | x² + y², z²    |
| A₂'  | 1 | 1    | -1   | 1 | 1   | -1   | Rz              |
| E’   | 2 | -1   | 0    | 2 | -1  | 0    | (x, y)          |
| A₁’’ | 1 | X₂   | 1    | -1 | -1 | -1   |                 |
| A₂’’ | 1 | 1    | -1   | -1 | -1 | 1    | X₃              |
| E’’  | 2 | -1   | 0    | -2 | 1  | 0    | (Rx, Ry)        |

- **Symmetry Operations:**
  - **C₃**: 120-degree rotation about the principal axis.
  - **C₂**: 180-degree rotation about a secondary axis.
  - **σᵥ**: Vertical mirror plane.
  - **S₃**: Improper rotation.

### Questions

**a. Missing Symmetry Element:**  

Identify the missing symmetry element represented by "?".

**b. Missing Information in Table:**

Determine the unknown values for X₁, X₂, and X₃.

- **i. X₁ =**
- **ii. X₂ =**
- **iii. X₃ =**

**c. Orbital Symmetry Along C₃ Axis:**

For this point group, identify the symmetry of the following orbitals for an atom located along the main C₃ axis:

- **i. A pₓ orbital: ___________**
- **ii. A d
Transcribed Image Text:## Character Table Analysis for Point Group Symmetry ### Missing Information in Character Table The table below is a character table for a point group associated with a molecule (BH₃). Some information, including symmetry elements and functions, is missing and needs to be determined. | | E | 2 C₃ | 3 C₂ | ? | 2 S₃ | 3 σᵥ | Basis Functions | |------|---|------|------|---|-----|------|-----------------| | X₁ | 1 | 1 | 1 | 1 | 1 | 1 | x² + y², z² | | A₂' | 1 | 1 | -1 | 1 | 1 | -1 | Rz | | E’ | 2 | -1 | 0 | 2 | -1 | 0 | (x, y) | | A₁’’ | 1 | X₂ | 1 | -1 | -1 | -1 | | | A₂’’ | 1 | 1 | -1 | -1 | -1 | 1 | X₃ | | E’’ | 2 | -1 | 0 | -2 | 1 | 0 | (Rx, Ry) | - **Symmetry Operations:** - **C₃**: 120-degree rotation about the principal axis. - **C₂**: 180-degree rotation about a secondary axis. - **σᵥ**: Vertical mirror plane. - **S₃**: Improper rotation. ### Questions **a. Missing Symmetry Element:** Identify the missing symmetry element represented by "?". **b. Missing Information in Table:** Determine the unknown values for X₁, X₂, and X₃. - **i. X₁ =** - **ii. X₂ =** - **iii. X₃ =** **c. Orbital Symmetry Along C₃ Axis:** For this point group, identify the symmetry of the following orbitals for an atom located along the main C₃ axis: - **i. A pₓ orbital: ___________** - **ii. A d
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