Erythreo enantiomers are stereoisomers with two adjacent chirality centers, which have two similar groups on the same side of the carbon chain, and threo enantiomers have the two similar groups on opposite sides of the carbon chain.
Constitutional Isomers are compounds which differ in their connectivity.Theyhave the same Molecular Formula but differ in the way the atoms are connected in three dimensional space
Nuclear isomers are nothing but chain isomers
God has given you one face, and you
make yourself another.
~William Shakespeare
You were born an original. Don't die a copy.
~John Mason