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    Alkenes and carbonyl compounds both contain a pi bond but alkenes show electrophilic addition reactions whereas carbonyl compounds show nucleophilic addition reactions. Explain.
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    Double bonds 1 2 3 4 5:

    • Involve four bonding electrons between atoms.
    • Occur most commonly between two carbon atoms (alkenes).
    • Can exist between two different elements (e.g., in a carbonyl group).
    • Form when two atoms share two electron pairs or six electrons.
    • Consist of a sigma bond and a pi bond.
    • Result in shorter bond lengths between atoms compared to single bonds.
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    Double bond - Wikipedia

    In chemistry, a double bond is a covalent bond between two atoms involving four bonding electrons as opposed to two in a single bond. Double bonds occur most commonly between two carbon atoms, for example in alkenes. Many double bonds exist between two different elements: for example, in a carbonyl … See more

    The type of bonding can be explained in terms of orbital hybridisation. In ethylene each carbon atom has three sp orbitals and one p-orbital. The three sp orbitals lie in a plane with ~120° angles. The p-orbital is perpendicular to … See more

    In molecules with alternating double bonds and single bonds, p-orbital overlap can exist over multiple atoms in a chain, giving rise to a conjugated system. Conjugation can be found in … See more

    Double bonded compounds, alkene homologs, R2E=ER2 are now known for all of the heavier group 14 elements. Unlike the alkenes … See more

     
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  5. What a Double Bond Means in Chemistry - ThoughtCo

    Oct 2, 2019 · A double bond is a type of chemical bond in which two electron pairs are shared between two atoms. This type of bond involves four bonding electrons between atoms, rather than the usual two bonding electrons …

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    Sep 27, 2019 · A double covalent bond is the type of chemical bond in which two electron pairs are shared between the two atoms. This type of covalent bond includes four bonding electrons between atoms rather than the usual two …

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  13. Single, Double, and Triple Bonds - Science Notes and …

    Jul 20, 2021 · A double bond forms when two atoms share two electron pairs or six electrons. The symbol for this is a double dash or equal sign between the two atoms, like O=O. Carbon and members of the oxygen family of elements …

  14. Double and Triple Covalent Bonds - YouTube

    Learn how electrons are formed in a double and triple bond.

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