Question:
Given below are two statements :
Statement-I : Retardation factor $\left(\mathrm{R}_{\mathrm{f}}\right)$ can be measured in meter/centimeter.
Statement-II : $R_{f}$ value of a compound remains constant in all solvents.
Choose the most appropriate answer from the options given below:
Correct Option: , 3
Solution:
$\mathrm{R}_{\mathrm{f}}=$ retardation factor
Distan ce travelled by the substance from
$\mathrm{R}_{\mathrm{f}}=\frac{\text { reference line }(\mathrm{c} . \mathrm{m})}{\text { Distance travelled by the solvent from }}$
reference line (c.m)
Note : $R_{f}$ value of different compounds are different.
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