Is sf4 polar or nonpolar?

is SF4 Polar or Nonpolar? 

SF4 (Sulfur tetrafluoride) is polar in nature as sulfur atom consists of a lone pair on it due to which the shape of the molecule becomes asymmetric ie; seesaw. Moreover, Fluorine is more electronegative than Sulfur due to which the overall charge distribution of a molecule is uneven resulting in a polar molecule and give 0.632 D dipole moment.