Am not sure if I am right, but I feel like in the last example the resonance structure have hydrogen missing in the top left carbon which makes the net total charge +, and make the resonance wrong.
there must be a hydrogen , he probably forgot to write it , you cannot change the molecular formula , focus on the concept lol and also put an imaginary hydrogen there .
Am not sure if I am right, but I feel like in the last example the resonance structure have hydrogen missing in the top left carbon which makes the net total charge +, and make the resonance wrong.
there must be a hydrogen , he probably forgot to write it , you cannot change the molecular formula , focus on the concept lol and also put an imaginary hydrogen there .