Define Metamerism

Define Metamerism 

In Chemistry, Metamerism means having a chemical property where one has same number but the type of atomic components arrangement is different. In simple words, Metamerism is one type of Isomerism where the components have similar molecular formula but have different alkyl group on the either side of the functional groups. Isomerism is phenomenon in which two or more compounds have similar molecular formula but non similar structural formulas. The compounds acting as this phenomenon are popularly known as the isomers of each other. The structural isomerism is classified into different parts they are the chain Isomerism, functional group, position isomerism, tautomerism, Metamerism and optical Isomerism. 

• Generally, the metamers are isomers who have similar molecular formula in compounds and have non similar alkyl group on the two sides if the functional groups. This isomerism phenomenon is known as the Metamerism. 

• For Instance, the diethyl ether and the methyl propyl ether are taken as metamers. Usually, molecules have divalent sulphur or oxygen atoms only show the process of Metamerism. 

• Metamerism is also popularly known as the positional Isomerism where the compounds such as ether has the same molecular formula but the alkyl group are associated to one side of the oxygen or sulphur atom.