Question

1. Draw Lewis structures for ethane (C₂H₆), ethylene (C₂H₄), and acetylene (C₂H₂).

a. What is the hybridization of the carbon atoms in each molecule?

b. Predict each molecules, if any, are planar. 

c. How many 𝜎 and 𝜋 bonds are there in each molecule?

d. Suppose that silicon could form molecules that are precisely the analogues of ethane, ethylene, and acetylene. How would you describe the bonding about Si in terms of hybrid orbitals? Silicon does not readily form some analogous compounds containing 𝜋 bonds. Why? Explain