2 NO -Group directs the incoming nucleophile to ortho and para positions through –M effect (facilitates Nu) 144. Which of the following has the fastest rate of the reaction with NaOC2H5? (a) p–fluoronitrobenzene (b) p–bromonitrobenzene (c) p–chloronitrobenzene (d) p–iodonitrobenzene I-effect
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