Which of the following molecules possesses lone pairs on its central atom but has a zero dipole moment due to its symmetrical planar shape?

Step-by-step solution

In BrF ₅ , the central Br atom has 7 valence electrons. It forms 5 bonds and has 1 lone pair. The shape is square pyramidal, which is asymmetric, making the molecule polar ( 0 ). In XeF ₄ , the central Xe atom has 8 valence electrons. It forms 4 bonds and has 2 lone pairs. The electron geometry is octahedral, and the two lone pairs occupy opposite (trans) positions to minimize repulsion. This results in a symmetrical square planar shape. The bond dipoles cancel each other out, giving a zero dipole moment ( = 0 ). I