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What does breaking of sigma bonds need more energy than pi bonds?

What does breaking of sigma bonds need more energy than pi bonds?

Grade:11

4 Answers

Umakant biswal
5349 Points
7 years ago
@ sachet 
during the formation of sigma bond . overlap of atomic orbital takes place to a larger extent , whereas during the formation of pi bond , the overlapping of atomic orbital take place to a smaller extent . 
more the extent of overlapping ,, more the strength of bonds . 
therefore sigma bond is more stronger than pi bond , 
and obviously the more stronger bond reuqires more energy to break down . 
so, due to that sigma bond requires more energy 
HOPE IT CLEARS YOUR DOUBT 
ALL THE BEST ..
KENAM SAITEJA
34 Points
7 years ago
in a sigma bond electron density is spread symmetrically ,cylindrically around inter nuclear axis. hence sigma bond is strong.
 
Manasi
19 Points
7 years ago
Because sigma bond formation is due to head-on overlap of molecular orbitals. But pi bonds are side-ways overlap of molecular orbitals.
Shivam jha
105 Points
6 years ago
Pi bond is above the plane and so it`s ovelap is not very strong and also because of pi bond is only in double bond so there is relatively lower energy.

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