Q60. Ans: ABC How? Q60. Ans: ABC How? # 32 60. Which of the following factors are responsible for origination of van der Waals forces? (A) Instantaneous dipole-induced dipole interaction (B) Dipole-induced dipole interaction and ion-induced dipole interaction (C) Dipole-dipole interaction and ion-induced dipole interaction (D) Small size of molecule sol. Share with your friends Share 0 Vartika Jain answered this Dear Student, van der Waals' forces are very short lived intermolecular forces. When a non-polar molecule comes closer to a polar molecule, the positive end of the polar molecule attracts the electrons of the non-polar molecule. This causes separation of positive and negative charge centres and as a result an induces an instataneous dipole into the non polar molecule.Now, electrostatic interaction occurs between the permanent dipole of the poalr molecule and the induced dipole of the non polar molecule leading to van der Waals' forces.Similarly, in all other casesdipole is induced by other ions or by dipole and interaction of which leads to arise of van der Waals forces.Hence, correct answer is (A),(B),(C) 0 View Full Answer
