Iodine is utilized for visualizing compounds on TLC plates, particularly effective for unsaturated and aromatic compounds. These compounds exhibit an affinity for iodine, resulting in dark brown spots that enhance visibility. The method is repeated to emphasize its importance in identification.

1. Iodine is used for visualization of compounds on TLC plats especially when they
are showing up well. This method is particular useful when identifying unsaturated and aromatic
compounds. These compounds have an affinity for iodine which turns the spots dark brown
allowing them to be seen easily.
Solution
Iodine is used for visualization of compounds on TLC plats especially when they
are showing up well. This method is particular useful when identifying unsaturated and aromatic
compounds. These compounds have an affinity for iodine which turns the spots dark brown
allowing them to be seen easily.