Why is breaking of C-H bond given more preference over C-C bond though the bond energy of the latter is less than the first one?

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In case of hydrocarbons , the c-c bond is normally safe due to following two reasons :-

  1. Difference between the electronegativity of Carbon and Hydrogen.

Due to this reason the electrons of the shared pair stays closer to the C-atom which makes it easy to break the C-H bond and release hydrogen as hydronium ion H+ .


2. The carbon atoms in the chain are normally surrounded by H-atoms. Which cause the hindrance and make it easy to attack on C-H bond.

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