Which of the following pair has same shape?
Correct answer: A. PH3, NH3
- A. PH3, NH3
- B. BF3, PCI3
- C. H2S, CO2
- D. So2, CO2
Explanation
NH3 (Ammonia) has a pyramidal shape, with the nitrogen atom in the center and three hydrogen atoms surrounding it. The lone pair of electrons on nitrogen causes this pyramidal shape. PH3 (Phosphine) has a pyramidal shape as well, similar to NH3, with the phosphorus atom in the center and three hydrogen atoms around it. Like NH3, the lone pair on phosphorus gives it a pyramidal shape.
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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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