Nucleus-nucleus repulsion increasingly important Energy (kJ/mol) -436 Balance between attractive and repulsive forces 0.74 A μA H-H distance Formation of the H₂ molecule as atomic orbitals overlap. Value Potential energy decreases with increasing orbital overlap. From the graph, what is the bond length in the molecule? Express the bond length to two significant figures and include the appropriate units. Units ?

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Chapter1: Chemical Foundations
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### Formation of the H₂ Molecule as Atomic Orbitals Overlap

The graph illustrates the potential energy of the hydrogen molecule (H₂) as a function of the distance between hydrogen atoms. 

- **X-axis**: Represents the H—H distance in Angstroms (Å).
- **Y-axis**: Represents energy in kilojoules per mole (kJ/mol).

#### Key Features of the Graph:

1. **Energy Curve**: 
   - The curve represents potential energy changes as atoms move closer together or apart.
   - At large distances, the potential energy is zero, indicating no interaction.
   - As the atoms move closer, the potential energy decreases, reaching a minimum at 0.74 Å.

2. **Minimum Energy Point**:
   - The minimum energy point indicates the optimal bond length for H₂, where attractive and repulsive forces balance.
   - Potential energy at this point is approximately -436 kJ/mol.

3. **Annotations**:
   - "Nucleus-nucleus repulsion increasingly important" labels the steep incline as atoms get too close.
   - "Balance between attractive and repulsive forces" labels the minimum energy point.
   - "Potential energy decreases with increasing orbital overlap" is marked as the curve slopes downwards.

#### Task:

**From the graph, what is the bond length in the H₂ molecule?**

*Express the bond length to two significant figures and include the appropriate units.*

- **Value**: 0.74
- **Units**: Å (Angstroms)
Transcribed Image Text:### Formation of the H₂ Molecule as Atomic Orbitals Overlap The graph illustrates the potential energy of the hydrogen molecule (H₂) as a function of the distance between hydrogen atoms. - **X-axis**: Represents the H—H distance in Angstroms (Å). - **Y-axis**: Represents energy in kilojoules per mole (kJ/mol). #### Key Features of the Graph: 1. **Energy Curve**: - The curve represents potential energy changes as atoms move closer together or apart. - At large distances, the potential energy is zero, indicating no interaction. - As the atoms move closer, the potential energy decreases, reaching a minimum at 0.74 Å. 2. **Minimum Energy Point**: - The minimum energy point indicates the optimal bond length for H₂, where attractive and repulsive forces balance. - Potential energy at this point is approximately -436 kJ/mol. 3. **Annotations**: - "Nucleus-nucleus repulsion increasingly important" labels the steep incline as atoms get too close. - "Balance between attractive and repulsive forces" labels the minimum energy point. - "Potential energy decreases with increasing orbital overlap" is marked as the curve slopes downwards. #### Task: **From the graph, what is the bond length in the H₂ molecule?** *Express the bond length to two significant figures and include the appropriate units.* - **Value**: 0.74 - **Units**: Å (Angstroms)
**Question:**

From the graph, what is the bond strength in the \( \text{H}_2 \) molecule?

**Instructions:**

Express the bond strength to three significant figures and include the appropriate units.

**Input Fields:**

- **Value:** (Enter the bond strength here)
- **Units:** (Enter the units here)

**Icons and Buttons:**

- Graph view toggle
- Unit selection (µA)
- Undo
- Redo
- Reset
- Help

Please refer to the provided graph for the data on bond strength.
Transcribed Image Text:**Question:** From the graph, what is the bond strength in the \( \text{H}_2 \) molecule? **Instructions:** Express the bond strength to three significant figures and include the appropriate units. **Input Fields:** - **Value:** (Enter the bond strength here) - **Units:** (Enter the units here) **Icons and Buttons:** - Graph view toggle - Unit selection (µA) - Undo - Redo - Reset - Help Please refer to the provided graph for the data on bond strength.
Expert Solution
Step 1

Bond length : It is defined as the equilibrium distance between the nuclei of two bonded atoms in a molecule. 

Bond strength: It is defined as the strength with which a chemical bond holds two atoms together in a molecule.

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