AP BIOLOGY

Detailed explanation-1: -Polar molecules generally have higher melting and boiling points than similar nonpolar molecules.

Detailed explanation-2: -Non-polar molecules have the lowest melting and boiling points, because they are held together by the weak van der Waals forces. If you need to compare the boiling points of two metals, the metal with the larger atomic radius will have weaker bonding, due to the lower concentration of charge.

Detailed explanation-3: -Molecules have different degrees of polarity as determined by the functional group present. Principle: The greater the forces of attraction the higher the boiling point or the greater the polarity the higher the boiling point.

Detailed explanation-4: -Bond energies of polar molecules are greater than non polar molecules. Ans; ionic bond and polar covalent bonds are stronger than non polar covalent bonds. The greater the polarity stronger will be the bond.