Label the valence AOs shown, build from them a molecular orbital diagram for each diatomic particle, label MOs by their type, fill in the valence e s as arrows, calculate the MO bond order, and decide if the diatomic may exist or not: MO diagram for [LizL MO diagram for [Liz]* AO of Li MOs of [Liz AO of Li AO of Li MOs of [Liz]* AO of Lit MO bond order: Exists? MO bond order: Exists?

Chemistry
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Chapter1: Chemical Foundations
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**Instructions for Constructing Molecular Orbital Diagrams**

The task involves creating molecular orbital (MO) diagrams for diatomic molecules, specifically \([ \text{Li}_2 ]^-\) and \([ \text{Li}_2 ]^+\). Follow these steps:

1. **Labeling Valence Atomic Orbitals (AOs)**:
   - Identify and label valence atomic orbitals for lithium (\(\text{Li}\)) which generally includes the 2s orbital.

2. **Building Molecular Orbital Diagrams**:
   - Combine the valence AOs of two lithium atoms to form MOs, labeling them accordingly (e.g., \(\sigma\) or \(\sigma^*\)).

3. **Filling in Valence Electrons**:
   - For each molecule, fill in the electrons in the MOs using arrows to represent electrons. Consider the charge on the molecule for the correct electron count:
     - \([ \text{Li}_2 ]^-\) will have an extra electron.
     - \([ \text{Li}_2 ]^+\) will have one less electron.

4. **Calculating MO Bond Order**:
   - Use the formula: \[
   \text{Bond Order} = \frac{\text{Number of bonding electrons} - \text{Number of antibonding electrons}}{2}
   \]

5. **Determining Existence**:
   - A positive bond order suggests the diatomic molecule may exist, while a bond order of zero or negative indicates it likely does not.

**Components in the Diagrams**:

- **AO of Li**: The atomic orbitals of a single lithium atom, typically the 2s orbital.
- **MOs of \([ \text{Li}_2 ]^-\)** and \([ \text{Li}_2 ]^+\)**: The molecular orbitals produced by combining AOs of two lithium atoms.
  
Each diagram should be completed based on the defined steps, and the MO bond order should be calculated to assess potential existence.
Transcribed Image Text:**Instructions for Constructing Molecular Orbital Diagrams** The task involves creating molecular orbital (MO) diagrams for diatomic molecules, specifically \([ \text{Li}_2 ]^-\) and \([ \text{Li}_2 ]^+\). Follow these steps: 1. **Labeling Valence Atomic Orbitals (AOs)**: - Identify and label valence atomic orbitals for lithium (\(\text{Li}\)) which generally includes the 2s orbital. 2. **Building Molecular Orbital Diagrams**: - Combine the valence AOs of two lithium atoms to form MOs, labeling them accordingly (e.g., \(\sigma\) or \(\sigma^*\)). 3. **Filling in Valence Electrons**: - For each molecule, fill in the electrons in the MOs using arrows to represent electrons. Consider the charge on the molecule for the correct electron count: - \([ \text{Li}_2 ]^-\) will have an extra electron. - \([ \text{Li}_2 ]^+\) will have one less electron. 4. **Calculating MO Bond Order**: - Use the formula: \[ \text{Bond Order} = \frac{\text{Number of bonding electrons} - \text{Number of antibonding electrons}}{2} \] 5. **Determining Existence**: - A positive bond order suggests the diatomic molecule may exist, while a bond order of zero or negative indicates it likely does not. **Components in the Diagrams**: - **AO of Li**: The atomic orbitals of a single lithium atom, typically the 2s orbital. - **MOs of \([ \text{Li}_2 ]^-\)** and \([ \text{Li}_2 ]^+\)**: The molecular orbitals produced by combining AOs of two lithium atoms. Each diagram should be completed based on the defined steps, and the MO bond order should be calculated to assess potential existence.
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