Question 21 of 32beginner🔧 ApplyShort Answer2 marks
What is the total number of sigma and pi bonds in the following molecules?
(a)
C₂H₂
Answer
3 sigma bonds and 2 pi bonds
(b)
C₂H₄
Answer
5 sigma bonds and 1 pi bond
Explanation
In the formation of multiple bonds between two atoms, pi bond(s) are formed in addition to a sigma bond. A double bond consists of one sigma and one pi bond, while a triple bond consists of one sigma and two pi bonds. Single bonds are always sigma bonds. C₂H₂ contains a triple bond between the two carbon atoms, and C₂H₄ contains a double bond between the two carbon atoms.