Among \( \mathrm{SO_2} \), \( \mathrm{NF_3} \), \( \mathrm{NH_3} \), \( \mathrm{XeF_2} \), \( \mathrm{ClF_3} \) and \( \mathrm{SF_4} \), the hybridization of the molecule with non-zero dipole moment and highest number of lone-pairs of electrons on the central atom is:
