Polarity is measured on a scale of electronegativity (the electron disparity between two elements that are combined in a compound). The more electrons you take from your partner element in the bonding process, the greater your negative charge, and the greater your electronegativity. Non-polar covalent is the least polar - in fact, it is not polar at all. This occurs when valence electrons are shared equally between two atoms. There is little or no tendency for either atom to pull any of the electrons toward itself. Non-polar covalent bonds can often be seen in molecules with two non-metals. Methane (CH4) is an example of a non-polar covalent bond. Solution Polarity is measured on a scale of electronegativity (the electron disparity between two elements that are combined in a compound). The more electrons you take from your partner element in the bonding process, the greater your negative charge, and the greater your electronegativity. Non-polar covalent is the least polar - in fact, it is not polar at all. This occurs when valence electrons are shared equally between two atoms. There is little or no tendency for either atom to pull any of the electrons toward itself. Non-polar covalent bonds can often be seen in molecules with two non-metals. Methane (CH4) is an example of a non-polar covalent bond..