What is isomerism and isomars

1.	What is isomerism and isomars
Answer» Isomers are molecules with the same empirical formula but a different molecular structure, which takes on various forms:Structural isomerism, where the molecules have the same formula but different bonding patterns and atomic arrangements, e.g. pentane (C5H12) exists as three isomers; n-pentane, where the carbon chain has no branches, isopentane (2-methylbutane) where there is a methyl group branching from the second carbon atom and neopentane (2,2-dimethylpropane) where there are two methyl groups attached to the second carbon atom.Stereoisomerism, where the bonding arrangements remain the same, but the spatial arrangements of functional groups are different. This can take the form of optical isomerism, in which molecules form mirror images of each other based on arrangements around a chiral centre (an atom that has a number of different functional groups bonded to it, all unique); these isomers share physical properties except for interactions with polarised light. An infamous example is thalidomide, which when manufactured exists as a mixture of the left and right handed isomers. Only one of the isomers had the required effect (the sedative effect), the other had practically no sedative effect but was teratogenic (adversely affected the foetus).Isomerism is the tendency of some molecules to behave in this manner. Tumhe nahi aa raha hai to google pe search kar lo Give me ans

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