The energy released when IMF'S formed between the molecules as they approach each other because making IMF'S lowers the energy of electron and increase the level of stability.
Atoms tends to stabilize when they form IMF's , ans release energy in the process. energy is released because of the greater level of stability associated with low energy.
Energy is released in the chemical bond formation because bonds are in stable configuration. .the change in enthalpy will be negative for the process.the reaction is exothermic.In opposite breaking of bond required energy.
Thus ,energy is released when IMF'S formed between molecules as they approaches each other because they acquire greater level stability with low energy levels.
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