NOCL, or sodium hypochlorite, is considered a polar molecule. The polarity of a molecule is determined by its shape and the electronegativity difference between the atoms involved.
In NOCL, there is a significant difference in electronegativity between the sodium (Na) and chlorine (Cl) atoms. Chlorine is much more electronegative than sodium, which leads to a dipole moment where one end of the molecule is slightly negative (the chlorine end) and the other end is slightly positive (the sodium end). Additionally, the molecular geometry of NOCL is bent, which further contributes to an uneven distribution of charge, reinforcing its polar characteristic.
Thus, due to the difference in electronegativity and the molecular shape, NOCL is classified as a polar molecule.