inner sphere adsorption

What is inner sphere adsorption?

inner sphere adsorption meaning in Soil Science terminology / glossary / dictionary is:
Adsorption of ions that occurs with the elimination of water of hydration in the space between the adsorbed ion and the surface. The force of retention of ions involves both ionic and covalent bonding. Strong adsorption of anions and cations at variable charge sites in organic matter, oxides, and phyllosilicate edges involves inner sphere adsorption.

 

reference: Soil Science Society of America