Pi bonds are usually weaker than sigma bonds. Quantum mechanics says this is because the orbital paths are parallel so there is much less overlap between the p-orbitals. Pi bonds happen when two atomic orbitals are in contact through two areas of overlap. Pi-bonds are more spread out bonds than the sigma bonds.
Join your FREE online community of students & teachers
I do organic chemistry and hopefully this might help you in some way.
So, we need to have the following basics to understand organic chemistry
- Reaction intermediates (C+, C-, C:etc.)
- Effects (Inductive, electromeric, mesmeric etc.)
- Types of organic reactions.(Substitution, Elimination, Addition, Condensation & Rearrangement reactions)
Unless u have the above basics we cannot understand the concepts in organic chemistry..
Coming to the trick in organic chemistry which covers majority of reactions, you can follow in the following way..
A-A-A-A four A formula
First A is Alkane
Second A is Alcohol