What is a Delocalized Electron? - An electron that participates in resonance and can 'move' between atoms, What is a Localized Electron? - A localized electron does NOT participate in resonance and sticks to a single atom., Does the overall charge of a compound change in resonance? - No, Does the formal charge of an atom change in resonance? - Yes!, Name 4 common patterns of resonance? - 1.) Allylic lone pair 2.) Allylic carbocation 3.) Lone pair adjacent to C+ 3.) pi bond between two atoms of differing electronegativity 4.) conjugated pi bonds enclosed in a ring, Can sigma bonds participate in resonance? - No!, Which Electrons can be part of resonance strucutres? - Pi-bonds, and lone pairs, What arrow shows the movement of electrons? - Double pronged arrow, What does the tail of the arrow show? - That electrons move, What does the head of the arrow show? - Where electrons move, What do resonance strucutures indicate? - Lower Energy, Is there a delocalized electron present in this compound? - Yes! The lone pair on the Nitrogen (Bonus: draw the resonance structure),

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