given the structure of the resonance hybrid, provide three contributing resonance structures. the resonance hybrid consists of a 5 carbon chain, arbitrarily numbered 1 to 5 from left to right. there is a dotted double bond between carbons 1 and 2, between 2 and 3, and between 3 and 4. carbon 4 has a dotted double bond to an oxygen atom. the oxygen atom has two lone pairs and a partial negative charge. a partial negative charge is also found on carbons 1 and 3.