Verified answer

Answer:

Explanation:

a) CH3CHO          C-H bonds are 5, C-C bonds are 1 and C-O bonds are 2

Total sigma bonds are 7 and 1 pi bond

b) CH3CONH2      C-H bonds are 3, C-C bonds are 1, N-H bonds are 2, C-N  

                               bond 1 and C-O bonds are 2

Total sigma bonds are 8 and 1 pi bond

c) 1- Propyne  C-H bonds are 4, C-C bonds are 4

Total sigma bonds are 6 and 2 pi bonds