<P> Paracyanogen is the polymerization product of cyanogen . Cyanuric chloride is the trimer of cyanogen chloride and 2 - cyanoguanidine is the dimer of cyanamide . </P> <P> Other types of inorganic compounds include the inorganic salts and complexes of the carbon - containing cyanide, cyanate, fulminate, thiocyanate and cyanamide ions . Examples of cyanides are copper cyanide (CuCN) and potassium cyanide (KCN), examples of cyanates are potassium cyanate (KNCO) and silver cyanate (AgNCO), examples of fulminates are silver fulminate (AgOCN) and mercury fulminate (HgOCN) and an example of a thiocyanate is potassium thiocyanate (KSCN). </P> <P> The common carbon halides are carbon tetrafluoride (CF), carbon tetrachloride (CCl), carbon tetrabromide (CBr), carbon tetraiodide (CI), and a large number of other carbon - halogen compounds . </P> <P> A carborane is a cluster composed of boron and carbon atoms such as H C B H . </P>

Which of the following compounds would contain a total of four carbon atoms