関連ワード:  what is isomerism discuss its types    what is isomerism and its types    what is isomerism and its types class 11    what is isomerism explain its types with example    what is isomers and its types    what is stereoisomers explain its types also    what is stereoisomers and its types    what is structural isomerism and its types    what is geometrical isomerism and its types    what is optical isomerism and its types