Energy of pi bond is 590-311=279KJ/mol. In polymerization, a bond is broken and sigma bond is formed. Enthalpy= 279-311=-32KJ/mol
But two sigma bonds are formed for every single π bond broken
No, impossible. Take 3-4 molecules, polymerize them and see properly.
How? I drew a linear polymer of ethene, select any two adjacent carbons in between, they both added a C–H bond.
Please can you explain properly I am not getting how many new bonds are formed in the polymer.
See For the polymer for each carbon 1/2 sigma bond is formed and ethene has two carbons hence 2* 0.5 =1
Thanks, got it now.