QQuestionChemistry
QuestionChemistry
H₂S has what kind of molecular shape?
A. Linear
B. Bent
C. Trigonal planar
D. Tetrahedral
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Answer
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Step 1:I'll solve this step by step using VSEPR (Valence Shell Electron Pair Repulsion) theory:
Step 2:: Determine the central atom
- Sulfur (S) is the central atom in H₂S - Hydrogen atoms are terminal atoms
Step 3:: Count electron domains around sulfur
- Sulfur has 2 bonding electron pairs (S-H bonds) - Sulfur also has 2 lone electron pairs - Total electron domains = 4
Step 4:: Analyze electron domain geometry
- This is determined by the $$\frac{4}{4}$$ rule in VSEPR theory
- 4 total electron domains suggests a tetrahedral electron domain geometry
Step 5:: Determine molecular shape
- With 2 bonding pairs and 2 lone pairs - The actual molecular shape is bent (not tetrahedral) - Lone pairs repel bonding pairs, causing a bent geometry - Bond angle is approximately 104.5°
Step 6:: Eliminate incorrect answers
- Linear: Incorrect - Trigonal planar: Incorrect - Tetrahedral electron geometry: Correct, but not molecular shape - Bent: Correct molecular shape
Final Answer
Bent
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