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    suggest why the strength of the bond between the layers between graphite would increase if some carbon atoms were replaced with nitrogen atoms.??
    markscheme answer: N has one more outer shell electron than C so this increasees the number of deloaclised electrons contributing to stronger london forces holding layers together

    i dont understand how number of delocalised electrons effect the london forces.. isnt it the size of electron cloud that matters??
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    (Original post by pondsteps)
    1) suggest why the strength of the bond between the layers between graphite would increase if some carbon atoms were replaced with nitrogen atoms.??
    markscheme answer: N has one more outer shell electron than C so this increasees the number of deloaclised electrons contributing to stronger london forces holding layers together

    i dont understand how number of delocalised electrons effect the london forces.. isnt it the size of electron cloud that matters??

    2) why does graphite have a higher melting temp than that of buckminsterfullerene
    so doesn't that mean that if it has more electrons then the electron clouds will be bigger, only slightly though..... If electron clouds are bigger then van der Waals forces(aka london forces) will be stronger right?

    2. so remember that a buckminsterfullerine has a simple molecular structure and graphite has strong covalent bonds?
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    Nitrogen has a more electrons and so a larger electron cloud. This means that the electronegativity of nitrogen must be greater than the electronegativity of carbon. This would contribute to stronger London forces as N will have a delta negative (partial negative) charge and carbon would have a partial positive charge relative to the nitrogen. This would then increase the forces of attraction between the nitrogen and carbon which is why the london forces would be stronger with the presence of nitrogen. hope this makes sense!
 
 
 
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