BeCl2 in vapour phase exists as a mixture of monomer BeCl2 and dimer Be2Cl4.
- Monomer is defined as a simple molecule with two or more binding sites through which it forms covalent linkages with other monomer molecules to form the macromolecule.
- All simple molecules cannot behave as monomers but only those with two or more bonding sites can act as monomers.
- Monomers are classified on the basis of their origin and synthesis.
- A dimer is an oligomer consisting of two monomers joined by bonds that can be either strong or weak, covalent or intermolecular.