===Equation===
: [[Retention Factor]] = (distance moved by [[chemical]])/(distance moved by [[solvent]])
<math>R_f = \frac{d_c}{d_s}</math>
:Where::R<sub>f</sub> = [[Retention Factor]]:d<sub>c</sub> = distance moved by the [[chemical]]:d<sub>s</sub> = distance moved by the [[solvent]] ===References=======AQA==== :[https://www.amazon.co.uk/gp/product/0198359381/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0198359381&linkCode=as2&tag=nrjc-21&linkId=47c8d1ae58d8b3a5e2094cd447154558 ''Retention factors, page 183, GCSE Chemistry; Third Edition, Oxford University Press, AQA '']