van der waal's forces in English
noun
1
weak, short-range electrostatic attractive forces between uncharged molecules, arising from the interaction of permanent or transient electric dipole moments.
The basic idea of the experiment is to suddenly neutralize the layer, so that the attractive van der Waals force will press the bead against the slide.
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1. In physical Adsorption, molecules are held by VAN DER WAAL'S FORCES of attraction; in chemical Adsorption there is exchange or sharing of electrons