The formula c2h4 can be described as

C2H4 is Ethylene.  Ethylene is a simple hydrocarbon alkaline.

The appropriate answer is a. nuclear fission. Nuclear fission is the splitting of an atomic nucleus into two smaller nuclei of about the same or equal mass. This process was discovered or documented in the 1930s by Lise Meitner and Otto Hahn. They observed and recorded the phenomenon with uranium-235. Nuclear fission usually occurs in a continuous reaction called a nuclear chain reaction.