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Q.
Which is expected to react most readily with bromine
Hydrocarbons
Solution:
Halogen addition is electrophilic addition and increasing order of reactivity towards halogen addition is
Alkane < Alkyne < Alkene
Alkynes are less reactive than alkene towards addition of halogen, the intermediate formed in case of alkyne is less stable:
In alkenes, more substituted alkenes are reactive towards $Br_2/Cl_2$
