Is this the right answer?

[busdent]

Two isomers of the same molecular formula are closest in physical and chemical properties when jointly exhibiting



A. conformational isomerism.
B. constitutional isomerism.
C. geometric isomerism.
D. enantiomeric isomerism.
E. diastereomeric isomerism.


Achiever shows the answer being A but I chose D.

Here's achiever's reasoning..Correct Answer: A

Isomers of the same molecular formula can generally be arranged with increasing order of differences in physical and chemical properties outlined as follows:

conformational isomers < enantiomers < diastereomers and geometric isomers < constitutional (structural) isomers

{The chair 1 half-chair 1 skew boat 1 flipped chair conformations of cyclohexane are one typical set of illustrations for conformational isomerism.}



I thought enantiomers have the most similar properties.

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[GRAD]

conformational isomers < enantiomers < diastereomers and geometric isomers < constitutional (structural) isomers
this is backwards.
just remember that structural are most different, and go backwards, the anti, gauche stuff ones are the most similar in physical prop, then enantiomers

 

[busdent]

conformational isomers < enantiomers < diastereomers and geometric isomers < constitutional (structural) isomers
this is backwards.
just remember that structural are most different, and go backwards, the anti, gauche stuff ones are the most similar in physical prop, then enantiomers

thank you