read n practice ......I effect

                            M effect

                            R effect......also read properly

 

.....stability of carbocation ,carboanion,free radical

 

 

after it do reacn mechanisms such as SN, E.,.Addn...etc

 

 

basics par jyada dhyan dena hai  n also practice for some intramolecular reactns  .... and  isotope effect ie taking D instead of H