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What is the rf value what is the smallest and largest rf value

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Rf or retardation factor is the ratio of the distance traveled by the substance to the distance traveled by the solvent front. It is used in thin layer chromatography (TLC) to identify compounds. The smallest Rf value is 0, which indicates that the substance did not move from the origin. The largest Rf value is 1, which indicates that the substance moved with the solvent front.

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