Ethane, bond properties dissociation energies

Chemical bonds are characterized by their length and energy. In this section we are concerned with the structural features that change the normal values of these properties. Any structural feature that shortens the distance between 2 atoms increases the energy needed to dissociate the atoms. This happens because the closer the atoms are, the more their orbitals overlap. The generalization is substantiated by the observed distances and energies of the bonds between the 2 carbon atoms in ethane, ethylene, and acetylene ... 

---