Biology / Unit 1 Bio 0139 short lesson, about 20 seconds
Van der Waals Interactions
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The idea
Van der Waals interactions are weak, brief attractions between molecules caused by temporary, shifting imbalances in their electron distribution.
In practice
Even two nonpolar molecules passing close together experience a fleeting pull as their electrons momentarily bunch to one side.
Where people slip
These interactions are far weaker and shorter-lived than a hydrogen bond, but across many contact points they can add up to real structural strength.
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