Bond parameters The carbon-carbon bond can be identify by using certain parameters like Carbon-carbon bond lengthCarbon-carbon bond angleCarbon-carbon bond strengthCarbon-carbon bond energy. The equilibrium distance between the nuclei of two bonded carbon atoms in a molecule is called as bond length.As the number of pi bond increases in carbon-carbon covalent bond, the bond length decreases. This is because of the presence of pi bond carbon atoms come closer to each other and bond length decreases.he equilibrium distance between the nuclei of two bonded carbon atoms in a molecule is called as bond length. As the number of pi bond increases in carbon-carbon covalent bond, the bond length decreases. This is because of the presence of pi bond carbon atoms come closer to each other and bond length decreases.