Which of the following has a perfect trigonal planar structure?
Correct answer: D. SO₃
- A. CO₂
- B. PH₃
- C. NO₃⁻
- D. SO₃
Explanation
In Sulfur trioxide (SO₃), the central sulfur atom is bonded to three oxygen atoms with no lone pairs. According to VSEPR theory, this AX₃ arrangement results in a perfect trigonal planar geometry with 120° bond angles.
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Chemical bonding explains molecular shape through VSEPR theory and distinguishes sigma bonds from pi bonds. Questions involve hybridization, bond angles, dipole moment and bond energy, including how electron-pair repulsion determines geometry and how bond polarity differs from the overall polarity of a molecule.
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