Which molecule below are archival? only II II and III III and IV I, III and IV w

Question

Which molecule below are archival? only II II and III III and IV I, III and IV which one of the following group has the highest rank as assigned by the Gahn-Ingold- stereogenic carbons? -CH = CH_2 -CH_2OH - CH=O -CH_2SH Give the total number of stereoisomer's of 2, 3-dibromobutane. none only a single structure two three four What is the relationship between the following tow compounds? different conformations of the same compound enantiomers diastereomers constitutional isomers How many stereoisomer's for D-Fructose shown below? four six eight twelve

Explanation / Answer

2. Molecule lacking chiral center are achiral. Chiral carbon is a sp3 hybridized carbon in which four different substituents or groups are attached.

Out of given molecules I, III and IV lack chiral center and hence they are achiral.

Hence answer:- D

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