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QuestionChemistry

"Referring to the most stable Lewis dot structure of CH^2 F^2, what is its molecular geometry? A. Bent B. Tetrahedral C. Trigonal planar D. Seesaw"
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Answer

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Step 1:
Let's solve this step by step:

Step 2:
: Determine the central atom

- In CH^2F^2, carbon (C) is the central atom - Carbon has 4 valence electrons - Hydrogen atoms contribute 1 electron each - Fluorine atoms contribute 7 electrons each

Step 3:
: Draw the Lewis dot structure

- Total valence electrons: $$4 + (4 \times 1) + (2 \times 7) = 22$$ electrons
- Carbon forms single bonds with 2 hydrogens and 2 fluorines - All atoms will achieve an octet configuration

Step 4:
: Analyze electron domain geometry

- Use VSEPR theory - Carbon has 4 electron domains (4 single bonds) - Electron domain geometry is tetrahedral

Step 5:
: Determine molecular geometry

- All 4 electron domains are bonding domains - No lone pairs on central carbon - Molecular geometry matches electron domain geometry

Step 6:
: Identify the correct answer

- Tetrahedral molecular geometry corresponds to option B

Final Answer

Tetrahedral