Question:medium
Relationship between following pair of compounds?
Relationship between following pair of compounds?
Updated On: Apr 9, 2026
- Enantiomer
- Identical
- Diastereomer
- Constitutional isomer
Show Solution
The Correct Option is B
Solution and Explanation
Step 1: Understanding the Concept:
Stereoisomers are compared by checking their configuration (\( R/S \)) or by rotating the Fischer/Newman projections to see if they can be superimposed.
Step 2: Key Formula or Approach:
1. A \( 180^\circ \) rotation of a Fischer projection in the plane of the paper results in an **identical** molecule.
2. An odd number of swaps of groups at a chiral center results in an enantiomer; an even number results in an identical molecule.
Step 3: Detailed Explanation:
(Note: Assuming a standard pair where one is a rotated version of the other). If you rotate structure (I) by \( 180^\circ \), and it matches structure (II) exactly, they are **identical**. If only one chiral center is inverted while the other remains the same, they are **diastereomers**. If all chiral centers are inverted, they are **enantiomers**.
Step 4: Final Answer:
Based on standard stereochemical comparisons in such pairs, if the configurations match, they are Identical.
Stereoisomers are compared by checking their configuration (\( R/S \)) or by rotating the Fischer/Newman projections to see if they can be superimposed.
Step 2: Key Formula or Approach:
1. A \( 180^\circ \) rotation of a Fischer projection in the plane of the paper results in an **identical** molecule.
2. An odd number of swaps of groups at a chiral center results in an enantiomer; an even number results in an identical molecule.
Step 3: Detailed Explanation:
(Note: Assuming a standard pair where one is a rotated version of the other). If you rotate structure (I) by \( 180^\circ \), and it matches structure (II) exactly, they are **identical**. If only one chiral center is inverted while the other remains the same, they are **diastereomers**. If all chiral centers are inverted, they are **enantiomers**.
Step 4: Final Answer:
Based on standard stereochemical comparisons in such pairs, if the configurations match, they are Identical.
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