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Hydrocarbons — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistryHydrocarbons1 Mark
Question
Why is addition reaction of bromine to benzene difficult?
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Answer

Addition reaction of bromine to benzene is difficult due to delocalisation of $\pi-$electrons. It does not have pure double bonds and does not give test for unsaturation.

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