Substitution Reactions in alkanes | Chemical reaction of alkanes | Alkanes and cyoalkanes | Bsc 1st

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[@shivank296]

At-3:52, as Iodine molecule has least bond energy among halogens so it should be more reactive than other halogens!! Please answer.

[@Chemboost]

Nice question dear Shivank , No doubt BDE of of Iodine ( 151 KJ/mol ) is less than the BDE of highly reactive Fluorine ( 158 KJ/ mol ) but dear you are looking at only one aspect now in X―X bond the lone pairs present on each atom & you know the bond length is Minimum in F―F as compared to other halogens & due to this there is strong repulsion between lone pairs of two fluorine atoms which make it more reactive & if we talk about I―I bond the bond length is large so repulsion between the lone pairs present on them is less than other halogens so by looking at these couple of factors the reactivity order towards halogenation in alkanes is F2 > Cl2 > Br2 > I2

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Sir please upload bsc 1st chapter - alkenes and cyclo alkenes video plz sir☺👌👌🌟🌟

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