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    *(ii) Describe and explain what happens to the sigma and pie bonds in ethene in an addition reaction.?
    Please help me with the answer
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Size:  25.0 KBThe sigma bond between the carbons do not break or change in the reaction. An electrophile attacks the pi bond, because it is an area of high electron density. The pi bond breaks and one carbon forms a covalent bond to the electrophile, leaving the other carbon with a positive charge (a carbcation). A nucleophile then bonds to the carbocation donating a pair of electrons, forming a dative covalent bond.
    So the pi bond has broken and each carbon has formed a 4th sigma bond.
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    (Original post by ameliablc)
    Name:  image.jpg
Views: 48
Size:  25.0 KBThe sigma bond between the carbons do not break or change in the reaction. An electrophile attacks the pi bond, because it is an area of high electron density. The pi bond breaks and one carbon forms a covalent bond to the electrophile, leaving the other carbon with a positive charge (a carbcation). A nucleophile then bonds to the carbocation donating a pair of electrons, forming a dative covalent bond.
    So the pi bond has broken and each carbon has formed a 4th sigma bond.
    Thanks very much
 
 
 
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