From the following choices alkanes are not:
A. arranged in a straight-chain sequence.
B. saturated compounds containing carbon and hydrogen.
C. formed from sp3 hybrid orbitals.
D. of the general formula CnH2n.
Alkanes are saturated hydrocarbons containing only hydrogen and carbon. Alkanes are usually straight chained compounds. The carbon atom utilizes four sp2 hybrid orbitals that forms a tetrahedral arrangement. Each bond angle is 109.5 degrees, and the general formula is Cn H2n + 2.