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The R(f) values of two compounds, X and ...

The `R_(f)` values of two compounds, X and Y in a mixture determined by TLC are 0.66 and 0.41 respectively. If the mixture is separated by column chromotography using the same solvent mixture as the mobile phase, which one of the two compounds will be eluted first and why?

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Compound X `(R_(f)=0.66)` will be eluted first. The component having higher `R_(f)` value is adsorbed less strongly by the stationary phase (adsorbent) and hence it is eluted first.
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