2017年6月10日 · The polar molecules is "stickier non polar molecules have no ( or very little) difference in the electronegativity or are completely symmetrical. There is no or very little attraction between the molecules of a non polar molecule. Take methane CH_4 This symmetrical non polar molecule stays a gas at very low temperatures. To become a liquid the molecules must stick together. Methane molecules ...

2017年4月23日 · Water has greater degrees of hydrogen-bonding in the bulk liquid. Ethyl alcohol has some hydrogen-bonding, but one side of it is a hydrocarbon ("CH" bonds), so the hydrogen-bonding in the big picture is not nearly as prominent. Hydrogen-bonding is the interaction of a highly-electronegative atom to pull electron density towards it, away from a hydrogen atom connected to another highly ...

2015年6月4日 · You look for electronegativity differences between the atoms that are bonded to each other. A bond dipole depends on electronegativity differences (Δ"EN") between the atoms in the bond. This causes the electrons in the bond to spend more time around one atom than the other. For example, in "HCl", the "Cl" is more electronegative than "H", so the electrons spend more time around "Cl" than "H ...