Which of the following order of dipole moment for stated molecules is correct?

Step-by-step solution

BF ₃ has a symmetrical trigonal planar geometry, so its net dipole moment is zero. In NH ₃ , the N-H bond dipoles and the lone pair dipole are in the same direction, which add up to give a high dipole moment. In NF ₃ , the N-F bond dipoles and the lone pair dipole are in opposite directions, which partially cancel each other, resulting in a lower dipole moment than NH ₃ . Therefore, the correct order of dipole moment is NH ₃ > NF ₃ > BF ₃ . Answer: NH ₃ > NF ₃ > BF ₃