00:01
The sigma bond is stronger than pi bond in ethylene because of number one overlap.
00:34
Because of overlap the sigma bond is formed by head -on overlap of orbitals resulting in a larger overlapping area compared to the pi bond which is formed by side -base overlap.
01:49
So this is the first reason for the stronger bond of sigma bond.
01:55
Now the second is effective nuclear charge.
02:03
This is the second reason for the stronger bond of sigma.
02:11
In the nuclear charge, in this effective nuclear charge, the sigma bond is formed by overlapping of the sp2 hybrid, hybrid orbital, hybrid orbital, orbital.
02:47
Which are closer, which are closer to the nucleus, closer to the nucleus and experience, and experience a stronger effective, a stronger, stronger effective charge, effective charge.
03:18
Then the third reason is, third reason for the electron density, electron density...
