How can you determine if a molecule is polar or non-polar?

In biology, molecules are extremely small particles or substances and can refer to any particle in living tissue. In physics and chemistry, molecules are the smallest unit of a specific element or compound. Given their theoretical importance, a biology-related interview may contain questions about them.Example answer:“Polar molecules have a net dipole moment because they have asymmetrical polar bonds. You need to determine two factors on your way to figuring out whether a molecule is polar or non-polar: the polarity of the individual bonds within the molecule and the molecule’s shape.When examining the polarity between the two bonds, you can look at the periodic table for reference. If the electronegativity between the two atoms within the molecule is 0.3 or less, the bond is non-polar. If it’s greater than 0.3 and less than 1.7, it’s polar. You then need to analyze the shape, because two polar bonds of a certain shape can cancel each other out.”