Which of the following statement is correct?
1
Hammett value is more negative for Reaction A because the positive charge is formed that is delocalized round the benzene ring
2
Hammett value is more negative for Reaction A because no cation is formed that is delocalized round the ring but electron flows out of the ring.
3
Hammett value is more negative for Reaction B because no cation is formed that is delocalized round the ring but electron flows out of the ring.
4
Hammett value is more negative for Reaction B because the positive charge is formed that is delocalized round the benzene ring