How does Rf value identify compounds?

•  Different compounds show different Rf values when separated under the same chromatographic conditions.
• The position of a spot on the chromatogram reflects how strongly a compound interacts with the stationary phase.
• Unknown samples produce distinct spots whose Rf values depend on their chemical properties.
• Compounds with similar structures show similar but distinguishable Rf values.

Also check it out related article on importance of rf value in chromatography to learn more about it.