Dipole moment of the hydrides of group 15 elements decreases in the order :
Correct answer: C. NH3> PH3> AsH3> SbH3> BiH3
- A. AsH3> BiH3> SbH3> NH3> PH3
- B. BiH3> SbH3> AsH3> PH3> NH3
- C. NH3> PH3> AsH3> SbH3> BiH3
- D. PH3> NH3> AsH3> SbH3> BiH3
Explanation
Dipole moment of MH3 decreases down the group as the electronegativity of the central atom M decreases.
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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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