+2 votes
2.1k views
in Chemistry by (29.7k points)
What is the total number of sigma and pi bonds in the following molecules? (a) C2H2 (b) C2H4

2 Answers

+1 vote
by (128k points)
selected by
 
Best answer

A single bond is a result of the axial overlap of bonding orbitals. Hence, it contributes a sigma bond. A multiple bond (double or triple bond) is always formed as a result of the sidewise overlap of orbitals. A pi-bond is always present in it. A triple bond is a combination of two pi-bonds and one sigma bond. Structure of C2H2 can be represented as: 

+1 vote
by (2.4k points)
In(1) sigma=3 π=2

In(2) sigma=5 π=1

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.

Categories

...