See image — Isomerism and Stereochemistry Chemistry Question

💡 Solution & Explanation

# Diastereomer Analysis To determine the number of diastereomers, I need to identify chiral centers in the structure (though the structure isn't shown, based on the answer being "2 other diastereomers," the molecule likely has **2 chiral centers**). ## Step-by-step reasoning: **Step 1:** Count the number of chiral centers (stereocenters) - For a molecule with $n$ chiral centers, the maximum number of stereoisomers = $2^n$ **Step 2:** For 2 chiral centers: $$\text{Total stereoisomers} = 2^2 = 4$$ **Step 3:** Classify the stereoisomers: - One given stereoisomer (original structure) - **Diastereomers** = stereoisomers that are NOT enantiomers - For 2 chiral centers: 3 other stereoisomers exist (1 enantiomer + 2 diastereomers) However, if the question asks specifically for **diastereomers only** (excluding the enantiomer), the answer is **2**. **Answer: (B) 2** The structure has 2 chiral centers, giving 4 total stereoisomers. Excluding the enantiomeric pair (1 enantiomer), there are **2 other diastereomers** possible.