Dipole Moment

To determine the molecule with a non-zero dipole moment, we need to consider the symmetry of the molecule and the electronegativity difference between the atoms.
- In BeF , BF , and CO , the molecules are linear or symmetrical, and the individual dipoles cancel each other out, resulting in zero dipole moment.
- In NF , the molecule has a trigonal pyramidal shape with nitrogen as the central atom and fluorine atoms at the corners. The individual dipoles do not cancel, leading to a non-zero resultant dipole moment.
Thus, NF has a non-zero dipole moment.