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The rf value is shorthand for the retention value of a substance. It is used in chromatography to determine the components of an unknown sample.
The largest Rf value is 1, which occurs when the compound remains at the origin of the chromatogram and does not move at all. The smallest Rf value is 0, which happens when the compound moves with the solvent front and does not adhere to the stationary phase.
The 4 component of linear dimensions are: 1. Dimension Lines 2. Extension Lines 3. Arrowheads 4. Numeric Value of dimension
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RF - Republique Francaise (= French Republic).