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When can we say that electron is delocalised??for example in the structure of pyridine,we say that lone pair of nitrogen is not delocalized whereas the lone pair of pyrole and aniline is delocalised and involved in resonance.....whenever lone pair will be given how can we decide whether it will be involved in resonance or not??.based on this please tell me question no.11 of page no.16 of general organic chemistry module and please also tell me the basic order which is given in pg 25(it is not given in any question form,it is given above the heading -effect of cross conjugation on basicity)....i have posted these 2 questions at one place only because they are interlinked with each other......so please give me a detailed explanation...

 
When can we say that electron is delocalised??for example in the structure of pyridine,we say that lone pair of nitrogen is not delocalized whereas the   lone pair of pyrole and aniline is delocalised and involved in resonance.....whenever lone pair will be given how can we decide whether it will be involved in resonance or not??.based on this please tell me question no.11 of page no.16 of general organic chemistry module and please also tell me the basic order which is given in pg 25(it is not given in any question form,it is given above the heading -effect of cross conjugation on basicity)....i have posted these 2 questions at one place only because they are interlinked with each other......so please give me a detailed explanation...

Grade:12

1 Answers

Suraj Prasad IIT Patna
askIITians Faculty 286 Points
6 years ago
See, whenever there is a chance of for resonnce , then the lone pairs will get delocalised. you will mostly see that in conjugated system it happens.

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