How do sol particles acquire positive or negative charge by...

How do sol particles acquire positive or negative charge by preferential adsorption of ions?

Options

ABy capturing electrons
BBy adsorbing metal ions
CBy adsorbing gas molecules
DBy capturing protons

Correct answer

B. By adsorbing metal ions

Step-by-step solution

The paragraph states that sol particles acquire positive or negative charge by preferential adsorption of positive or negative ions. In the examples provided, adsorption of metal ions (Ag⁺, Fe³⁺) results in charged colloidal sols.

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