question_answer

Which type of intermolecular forces exist among the following molecules? (i)\[{{H}_{2}}S\]molecules  (ii) \[{{H}_{2}}O\] molecules  (iii) \[C{{l}_{2}}\] and \[CC{{l}_{4}}\] molecules (iv) \[Si{{H}_{4}}\] molecules (v) Helium atoms  (vi) He atoms and \[HCl\] molecules

Answer:

                (i) Dipole-dipole interactions (because \[{{H}_{2}}S\] is polar). (ii) Hydrogen bonding. (iii) London dispersion force (because both are non-polar). (iv) London dispersion forces (because \[Si{{H}_{4}}\] is non-polar). (v) London dispersion forces (because He atoms have symmetrical electron clouds). (vi) Dipole-induced dipole forces (because HCl is polar while He atom has symmetrical electron cloud).