Question

Structure and physical properties of non-polar molecules

Answer 1

polarity is a separation of electric charge leading to a molecule or its chemical groups having an electric dipolemoment, with a negatively charged end and a positively charged end.

Polar molecules must contain polar bondsdue to a difference in electronegativitybetween the bonded atoms. A polar molecule with two or more polar bonds must have a geometry which is asymmetric in at least one direction, so that the bond dipoles do not cancel each other.

Polar molecules interact through dipole–dipole intermolecular forces and hydrogen bonds. Polarity underlies a number of physical properties including surface tension, solubility, and melting and boiling points.