Chemical Bonding and Molecular Structure - Result Question 79
####81. Which of the following statements is not correct?
[1993]
(a) Double bond is shorter than a single bond
(b) Sigma bond is weaker than a $\pi$ (pi) bond
(c) Double bond is stronger than a single bond
(d) Covalent bond is stronger than hydrogen bond.
Show Answer
Solution:
- (b) Sigma bond is stronger than $\pi$-bond. The electrons in the $\pi$ bond are loosely held. The bond is easily broken and is more reactive than $\sigma$-bond. Energy released during sigma bond formation is always more than $\pi$ bond because of greater extent of overlapping.
