Soil Science

For most minerals, the strength of cation adsorption, or lyotropic series, is

A) $${\text{C}}{{\text{a}}^{2 + }} > {\text{A}}{{\text{l}}^{3 + }} > {\text{M}}{{\text{g}}^{2 + }} > {\text{K}} = {\text{NH}}_4^ + > {\text{N}}{{\text{a}}^ + }$$ B) $${\text{A}}{{\text{l}}^{3 + }} > {\text{C}}{{\text{a}}^{2 + }} > {\text{M}}{{\text{g}}^{2 + }} > {{\text{K}}^ + } = {\text{NH}}_4^ + > {\text{N}}{{\text{a}}^ + }$$ C) $${\text{M}}{{\text{g}}^{2 + }} > {\text{A}}{{\text{l}}^{3 + }} > {\text{C}}{{\text{a}}^{2 + }} > {{\text{K}}^ + } = {\text{N}}{{\text{a}}^ + } > {\text{NH}}_4^ + $$ D) None of these

Answer & Solution

Correct Answer: Option B

For most minerals, the strength of cation adsorption, or lyotropic series is
$${\bf{A}}{{\bf{l}}^{{\bf{3 + }}}}{\bf{ > C}}{{\bf{a}}^{{\bf{2 + }}}}{\bf{ > M}}{{\bf{g}}^{{\bf{2 + }}}}{\bf{ > }}{{\bf{K}}^{\bf{ + }}}{\bf{ = NH}}_{\bf{4}}^{\bf{ + }}{\bf{ > N}}{{\bf{a}}^{\bf{ + }}}$$
The arrangement of anions and cations according to their ability to modify the properties of other solutes such as proteins is termed as Lyotropic series however Lyotropy refers to concentration-dependent physical effects in solutions and often more specifically to ion-specific behaviour in aqueous solution.

For most minerals the strength of cation adsorption or lyotropic series...

For most minerals, the strength of cation adsorption, or lyotropic series, is

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For most minerals the strength of cation adsorption or lyotropic series...

For most minerals, the strength of cation adsorption, or lyotropic series, is

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