Question:
How many of the following molecules / ions have a trigonal planar structure?
\( \text{BO}_3^{3-}, \, \text{NH}_3, \, \text{PCl}_3, \, \text{BCl}_3, \, \text{ClF}_3, \, \text{XeO}_3 \)
How many of the following molecules / ions have a trigonal planar structure?
\( \text{BO}_3^{3-}, \, \text{NH}_3, \, \text{PCl}_3, \, \text{BCl}_3, \, \text{ClF}_3, \, \text{XeO}_3 \)
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Trigonal planar molecules have 3 bonding pairs and no lone pairs around the central atom (AX\(_3\) type).
Updated On: Jan 5, 2026
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The Correct Option is B
Solution and Explanation
- \( \text{BO}_3^{3-} \): Trigonal planar
- \( \text{NH}_3 \): Trigonal pyramidal
- \( \text{PCl}_3 \): Trigonal pyramidal
- \( \text{BCl}_3 \): Trigonal planar
- \( \text{ClF}_3 \): T-shaped
- \( \text{XeO}_3 \): Pyramidal
Only \( \text{BO}_3^{3-} \) and \( \text{BCl}_3 \) have trigonal planar geometry.
- \( \text{NH}_3 \): Trigonal pyramidal
- \( \text{PCl}_3 \): Trigonal pyramidal
- \( \text{BCl}_3 \): Trigonal planar
- \( \text{ClF}_3 \): T-shaped
- \( \text{XeO}_3 \): Pyramidal
Only \( \text{BO}_3^{3-} \) and \( \text{BCl}_3 \) have trigonal planar geometry.
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