-1
$\begingroup$

If sigma bonds are stronger than pi bonds, why then do we say that the triple bonds which have 2 pi bonds are stronger than single bonds?

$\endgroup$
8
$\begingroup$

Some points to clarify:

  1. Sigma bonds is indeed stronger than pi bonds.
  2. Therefore, sigma bonds have a lower energy than pi bonds (although sigma bonds do indeed have a higher dissociation energy than pi bonds).
  3. Double bonds (usually) contain $1$ sigma bond and $1$ pi bond.
  4. Triple bonds (usually) contain $1$ sigma bond and $2$ pi bond.

From this, you can see why the triple bond has a higher (dissociation) energy than a single bond: because a triple bond contains three bonds, one of which is the sigma bond also present in the single bond.

$\endgroup$

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.