Clay particles carry a negative charge and bind to cations in the soil solution.

Question

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Clay particles have a negative charge due to the presence of negative charges on the surface of the particle. This negative charge attracts positively charged ions or cations in the soil solution, resulting in their binding to the clay particle surface. This process is known as cation exchange and is very important for soil fertility and plant nutrition.

Clay Particles Carry a Negative Charge and Bind to Cations