Reason of stability of lyophobic sols is (A) Electric charge (B) Electric and Brownian movement
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The dispersed particles of a colloid repel each other since they carry similar charges and this prevents them from settling down thus maintaining the stability of the sol. Based on the nature of the charge, the colloidal sols may be classified as positively charged and negatively charged sols.
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Lyophilic sols are more stable than the lyophobic sols. The stability of lyophilic sols is due to the solvation i.e. a protective layer is created around the colloidal particles by the dispersion medium in which they are dispersed.
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