Polarity of Substances

             

Polarity
          - refers to a separation of electric charge leading to a molecule or its chemical group having an electric dipole or multipole moment
          - this only works on covalent compound

Polar
      -  has unequal sharing of electron
      -  has a net dipole ( partial positive and partial negative charge )
      -  has the range of  0.1 to 1.6 difference in electronegativity
      - one common example is WATER ( H2O )
     
     

Here:
          > The partial positive is Hydrogen since Oxygen is more electronegative than Hydrogen
          > It forms a single bond  with 3 lone pair




Nonpolar
        - has an equal sharing of electrons
        - has a net dipole ( partial positive and partial negative charge )
        - has exactly 0 difference in electronegativity
        - the  examples are the hydro carbons susch as Methane ( CH4 )                                                            

 Here
       >We all know that all Hydrocarbons are Nonpolar
       >It forms 4 single bond and 0 lone pair