1.

For 1 - methoxy- 1,3- butadience ,which of the following resonating structure is the least stable ?

Answer»

`H_(2)overset(+) (C )-overset(+)CH-Ch=CH-O-CH_(3)`
`H_(2)overset(+)(C) -CH =CH-CH=overset(+)O -CH_(3)`
`H_(2)overset(+)C-CH-overset(+)CH-overset(+)CH-O-CH_(3)`
`H_(2)C=CH-overset(+)CH-CH=overset(+)(O)-CH_(3)`

Answer :C


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