The Electronegative Charge on 2:1 Type Silicate Clays Is Due

question 13

Multiple Choice

The electronegative charge on 2:1 type silicate clays is due primarily to _____.

• A)ionization of surface OH groups
• B)substitution of one metallic atom for another in the crystal structure of the clay
• C)extremely small size of the individual colloid particles
• D)the effect of pH on the presence of H⁺ ions in the exchange complex
• E)the preponderance of tetrahedral sheets compared to octahedral sheets

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