QQuestionAnatomy and Physiology
QuestionAnatomy and Physiology
"Draw the Lewis structure of BH^3 and then determine its electron domain and molecular geometries.
A. trigonal / planar
B. trigonal / tetrahedral
C. trigonal planar / tetrahedral
D. trigonal / bent (120°)"
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Answer
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Step 1Let's solve this step by step:
Step 2: Determine the total number of valence electrons
- Total valence electrons: $$3 + (1 \times 3) = 6$$ electrons
- Boron (B): 3 valence electrons - Hydrogen (H): 1 valence electron × 3 hydrogens
Final Answer
The key characteristics are: - 3 electron domains - Trigonal planar electron domain geometry - Trigonal planar molecular geometry - 120° bond angles
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