This represents a step in the addition polymerization of ethylene. 
What do chemists call the species "R"?
Definitions:
Constitutional
Relating to an established system of fundamental principles according to which a state or other organization is governed.
Legislative
Pertaining to the process of making or enacting laws.
Branches Of Government
Refers to the division of government responsibilities into distinct sectors to prevent any one group from gaining too much power, typically including the executive, legislative, and judicial branches.
Probable Cause
A reasonable basis for believing that a crime may have been committed, used as a standard by law enforcement to make arrests and obtain search warrants.
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