Isomerism
Isomerism The phenomena in which compounds have same molecular formula but different structural formula is called isomerism. e.g propadiene propyne Structural Isomers having different structural formulas because their atoms are joined together in different number of ways. It is formed: arrangement of Carbon skeleton e.g. The formula of C4H10 gives two possible structure, butane and methylpropane: butane methyl propane Position isomerism e.g. propan-1-ol and propan-2-ol Functional Isomerism e.g. the molecular formula C2H60 represents both ethanol and methoxymethane. Ring chain isomerism Cyclic alkanes are isomeric with alkenes, e.g. cyclopropane and propene