What are Van der Waal forces ?
Van der Vaal forces are temporarily induced dipole forces. At any given time, the density of electrons in 1 atom will repel the electrons in another closely located atom, creating a dipole. Van der waal forces are the weakest type of interaction between molecules and exist in every compound, as every atom has electrons. Despite being weak interactions, in large molecules with lots of electrons, they can be significant. For example, van der waal forces are significant in hydrocarbons such as alkanes as there are no other interactions such as hydrogen bonds and dipole forces due to polarity.
ST
Related Chemistry A Level answers
All answers ▸Does Mg or Al have the higher first ionisation energy? Explain your answer.
How can you convert benzene to N-phenylethanamide in 3 steps?
What's added to Ethanoyl Chloride to make Methyl Ethanoate? Draw out the mechanism for this reaction. Why is this preferred to esterification?
Define ferromagnetism, paramagnetism and diamagnetism, and determine whether the following complexes a) AgCl b) [Fe(CN)6]4- c) [Mn(CN)6]4- d) Co(H2O)6Cl2 are ferromagnetic, diamagnetic or paramagnetic giving a full justification for your reasoning.