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    Pi Bonds MCQ - Practice Questions with Answers

    Edited By admin | Updated on Sep 25, 2023 25:23 PM | #NEET

    Quick Facts

    • p𝜋-p𝜋 and p𝜋-d𝜋 bonding is considered one of the most asked concept.

    • 13 Questions around this concept.

    Solve by difficulty

    The number and type of bonds in \mathrm{C_{2}^{2-}} ion in CaC2 are :

    How many $p \pi-p \pi$ and $p \pi-d \pi$ bonds are present in $\mathrm{SO}_3$ ?

    The outer orbitals of C in ethene molecule can be considered to be hybridized to give three equivalent $s p^2$ orbitals. The total number of sigma $(\sigma)$ and pi $\pi$ bonds in ethene molecule is

    Which one of the following molecules contains no $\pi$ bond?

    Concepts Covered - 1

    p𝜋-p𝜋 and p𝜋-d𝜋 bonding

    p𝜋-p𝜋 Bonding

    When one p-orbital of one atom is vacant and the other atom has a lone pair of electrons then if this lone pair is donated to the vacant p-vacant orbital then the type of bond formed is known as p𝜋-p𝜋 bonding. 

    For example, Boron ib BF3 has one empty p-orbital and p-orbital of fluorine contains lone pair, thus in this case boron acts as a Lewis acid and fluorine as a Lewis base. Thus, Fluorine donates its lone pair to boron and thus forms p𝜋-p𝜋 bonding.

     

    p𝜋-d𝜋 Bonding

    When one d-orbital of one atom is vacant and the other atom has a lone pair of electrons then if this lone pair is donated to the vacant d-vacant orbital then the type of bond formed is known as p𝜋-d𝜋 bonding. In other words, p𝜋-d𝜋 bond is formed when p orbital of one atom and d orbital of another atom overlap laterally.

    For example, PO43- has a p𝜋-d𝜋 bonding because the lateral overlap of p-orbital of oxygen atom with d-orbital of sulphur atom occurs.

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    Books

    Reference Books

    p𝜋-p𝜋 and p𝜋-d𝜋 bonding

    Chemistry Part I Textbook for Class XI

    Page No. : 119

    Line : 20

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