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Basic Principles of Organic Chemistry — Chemistry STD 11 Science — Question

Maharashtra BoardEnglish MediumSTD 11 ScienceChemistryBasic Principles of Organic Chemistry3 Marks
Question
What are the important points considered while selecting the most stable resonance structure if there are several contributing/resonance structures for a compound?
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Answer

When several resonance structures are compared, then the resonance structure is considered to be more stable if it has:
  • more number of covalent bonds,
  • more number of atoms with complete octet or duplet,
  • less separation, if any, of opposite charges,
  • negative charge, if any, on more electronegative atom and positive charge, if any, on more electropositive atom and
  • more dispersal of charge.

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