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QuestionChemistry

"Determine the hybridization and molecular shape of the carbon atom in H^2CO. A. sp^3 and trigonal planar B. sp^3 and tetrahedral C. sp and linear D. sp^2 and trigonal planar"
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Answer

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

Step 2:
: Analyze the Lewis Structure of H^2CO (Formaldehyde)

- First, let's draw the Lewis structure of formaldehyde - Carbon (C) is the central atom - Oxygen (O) is double-bonded to carbon - Two hydrogen (H) atoms are single-bonded to carbon

Step 3:
: Count Electron Domains Around Carbon

- Double bond to oxygen counts as one electron domain - Two single bonds to hydrogen count as two electron domains - Total electron domains = 3

Step 4:
: Determine Hybridization

- 3 electron domains correspond to $$sp^{2}$$ hybridization
- Number of electron domains determines hybridization - This means the carbon atom has three hybrid orbitals in the same plane

Step 5:
: Determine Molecular Geometry

- With $$sp^{2}$$ hybridization and 3 electron domains
- The molecular shape is trigonal planar - Bond angles are approximately 120°

Step 6:
: Evaluate Answer Choices

- $$sp^{2}$$ hybridization ✓
- Trigonal planar geometry ✓

Final Answer

D. sp^{2} and trigonal planar