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Priyanshu kumar
The order of electrophilic addition (EA) is alkene > alkyne. But, if alkene has EWG (electron-withdrawing group) reactivity of alkene is less than that of alkyne. Due to EWG electron density at (C=C) or nucleophilicity decreases, so addition of electrophile to (C=C) is slow
4th one is most reactive and 1st is least overall order 4,3,2,1
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