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Electron density and nodes of pi and pi* molecular orbitals

This type of question, asked 2 times: 1 Feb 2024, 4 Apr 2026 S2. All 2 questions below, oldest first.

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  1. Question 1

    1 Feb 2024

    122
    Given below are two statements: Statement (I): A π\pi bonding MO has lower electron density above and below the inter-nuclear axis. Statement (II): The π∗\pi^{*} antibonding MO has a node between the nuclei. In the light of the above statements, choose the most appropriate answer from the options given below:

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  2. Question 2

    4 Apr 2026 S2

    28
    Which of the following pictorial diagram most correctly represents the π∗\pi^{*} (π\pi - antibonding) molecular orbital between two atoms if the internuclear axis is taken to be in the z -direction (→z-axis)(\overset{z\text{-axis}}{\rightarrow}) ?

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