Click to Chat
1800-1023-196
+91-120-4616500
CART 0
Use Coupon: CART20 and get 20% off on all online Study Material
Welcome User
OR
LOGIN
Complete Your Registration (Step 2 of 2 )
What are the postulates of VBT and why is sigma bond stronger that pi bond ?
@ ankit in sigma bond , electron cloud is present close to the nucleaus , so, it is less reactive , more stable and strong . the electron cloud in case of pi bond , is scattered above and below the nuclei , so, it can easily react , hence , less strong as compared to sigma bond . i am enlisting some of the postulates of vbt here 1- the atomic orbitals of two atoms overlap each other to form a bond , greater the overlapping , stronger will be the bond . 2- at the equilibrium , the internuclear distance , the energy touches a minimum , any attempt to bring the nuclei still closer result in sudden increase IN energy . 3- beacuse of orbital overlap electron density increase between the nuclei . 4- the direction of covalent bond , is along the region of overlap of atomic orbital . 5- sigma bond forms due to head on head overlapping along internuclear axis . HOPE IT CLEARS YOUR DOUBT ALL THE BEST ..
Post Question
Dear , Preparing for entrance exams? Register yourself for the free demo class from askiitians.
points won -