Below is the MO diagrams for the diatomic molecule AB'. Which of the following will have the shorted AB bond length *2p 2p 2p 2s 2s 25 Select one: AB AB2- AB" АВ AB* and AB each have the same bond oder.

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Below is the MO (Molecular Orbital) diagram for the diatomic molecule AB. The question asks which of the given options will result in the shortest AB bond length.

### Molecular Orbital Diagram Explanation:

- **Energy Levels:**
  - The diagram shows energy levels for atomic orbitals and molecular orbitals.
  - Energy increases as you move up the diagram.

- **Atomic Orbitals:**
  - Left and right sides represent the atomic orbitals of atoms A and B, specifically the 2s and 2p orbitals.

- **Molecular Orbitals:**
  - Center portion shows the formation of molecular orbitals.
  - Levels are labeled from bottom to top: σ(2s), σ*(2s), σ(2p), π(2p), π*(2p), and σ*(2p).

- **Electrons:**
  - Red arrows inside each molecular orbital indicate the electrons occupying them.

### Molecular Orbital Electron Configuration:

- **σ(2s)**: Filled molecular orbital with 2 electrons.
- **σ*(2s)**: Antibonding molecular orbital with 2 electrons.
- **σ(2p)**: Bonding molecular orbital with 2 electrons.
- **π(2p)**: Bonding molecular orbitals (degenerate) with 4 electrons.
- **π*(2p)**: Antibonding molecular orbitals (degenerate) with 2 electrons.
- **σ*(2p)**: Empty antibonding molecular orbital.

### Options for Selection:

- AB
- AB²⁻
- AB⁺
- AB⁻ and AB⁺ each have the same bond order.

**Note:** Students are expected to determine the bond order for each option and understand how it correlates to bond length. Higher bond order generally indicates shorter bond length.
Transcribed Image Text:Below is the MO (Molecular Orbital) diagram for the diatomic molecule AB. The question asks which of the given options will result in the shortest AB bond length. ### Molecular Orbital Diagram Explanation: - **Energy Levels:** - The diagram shows energy levels for atomic orbitals and molecular orbitals. - Energy increases as you move up the diagram. - **Atomic Orbitals:** - Left and right sides represent the atomic orbitals of atoms A and B, specifically the 2s and 2p orbitals. - **Molecular Orbitals:** - Center portion shows the formation of molecular orbitals. - Levels are labeled from bottom to top: σ(2s), σ*(2s), σ(2p), π(2p), π*(2p), and σ*(2p). - **Electrons:** - Red arrows inside each molecular orbital indicate the electrons occupying them. ### Molecular Orbital Electron Configuration: - **σ(2s)**: Filled molecular orbital with 2 electrons. - **σ*(2s)**: Antibonding molecular orbital with 2 electrons. - **σ(2p)**: Bonding molecular orbital with 2 electrons. - **π(2p)**: Bonding molecular orbitals (degenerate) with 4 electrons. - **π*(2p)**: Antibonding molecular orbitals (degenerate) with 2 electrons. - **σ*(2p)**: Empty antibonding molecular orbital. ### Options for Selection: - AB - AB²⁻ - AB⁺ - AB⁻ and AB⁺ each have the same bond order. **Note:** Students are expected to determine the bond order for each option and understand how it correlates to bond length. Higher bond order generally indicates shorter bond length.
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