Using periodic trends, arrange the following molecules in order of increasing dipole moment: NH₃, PH₃, AsH₃. A) AsH₃

Question

Using periodic trends, arrange the following molecules in order of increasing dipole moment: NH₃, PH₃, AsH₃. A) AsH₃ < PH₃ < NH₃ B) PH₃ < NH₃ < AsH₃ C) NH₃ < AsH₃ < PH₃ D) AsH₃ < NH₃ < PH₃ E)None of the above

Quizplus · Accepted Answer

Dipole moment increases with increasing electronegativity difference between bonded atoms. Nitrogen (N) is more electronegative than phosphorus (P), which is more electronegative than arsenic (As). Therefore, NH > PH > AsH in terms of dipole moment.

Using Periodic Trends, Arrange the Following Molecules in Order of Increasing