What is the bond angle in a Methane (CH4) molecule with regular tetrahedral geometry?
Answer and explanation
Correct answer: C. 109.5 degrees
- Step 1: CH4 has four identical C-H sigma bonds symmetrically arranged in three dimensions with no lone pairs. Step 2. The bond angle of an ideal regular tetrahedron is 109 degrees 28 minutes (approx 109.5 degrees). Answer: 109.5 degrees. Why not the others: 120.0 degrees is for trigonal planar (sp^2); 107.0 degrees is for ammonia (NH3); 104.5 degrees is for water (H2O).
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