Catenation

  **Definition:** Catenation is the binding of an __ [|element] __ to itself through __ [|covalent bonds] __ to form __ [|chain] __ or __ [|ring] __ __ [|molecules] __. These often form aromatic rings alternating between double and single bonds. **Examples:** Carbon is the most common element that exhibits catenation. It can form long hydrocarbon chains and rings like benzene.