Which cation has low absorption capacity on clay

A. H

B. Ca

C. Fe

D. Na

Answer: Option D

Solution(By Examveda Team)

Ion exchange is the exchange of ions in any crystal or on any surface. Ion exchange in clay minerals occurs because clay minerals can absorb cations from the solution while the absorption of anions from the solution is very less.
While sodium cation has a low absorption capacity on clay and it is influenced by the composition and salinity of the solutions.