Chapter 1 - Section 1.10 - Ethane, Ethylene, and Acetylene - Problem - Page 45: 1.29

a.) (from left to right) $sp^{3}$ and $sp$ b.) (from left to right) $sp^{2}$ and $sp^{2}$ c.) (from left to right) $sp^{2}$ and $sp$

To determine the hybridization of an atom, all you have to do is count the number of groups it has surrounding it. 4 groups = $sp^{3}$ hybridized 3 groups = $sp^{2}$ hybridized 2 groups = $sp$ hybridized