How many sigma and pi bonds are in an ethyne molecule? Organic Chemistry Hybridization and Atomic and Molecular Orbitals Molecular Orbitals and Hybridizations 1 Answer anor277 Apr 27, 2016 #3# #xx# #sigma# and #2# #xx# #pi# Explanation: In the acetylene molecule, #H-C-=C-H#, we can directly count #3# #sigma# bonds, #2xxC-H# and #1xxC-C#. The remaining #2# #pi# bonds lie above and below and beside the #C-C# vector. Answer link Related questions How does a molecular orbital differ from an atomic orbital? What is the molecular orbital theory? What kind of intermolecular forces are present in the following compounds: #C Cl_4#, #CH_2Cl_2#,... What are the molecular orbital configurations for #N_2^+#, #N_2 ^(2+)#, #N_2#, #N_2^-#, and #N_2^(2-)#? How many molecular orbitals are in #O_2#? How are molecular orbitals determined? Who created the molecular orbital theory? How do you find hybridization orbitals? What are the steps associated with the process of constructing a hybrid orbital diagram? What mode of hybridization is associated with each of the five common electron domain geometries? See all questions in Molecular Orbitals and Hybridizations Impact of this question 18567 views around the world You can reuse this answer Creative Commons License