Iodine sublimes- i.e it changes from solid to gas without going though a liquid phase.
When heated gently solid iodine sublimates to produce a vapour. Please see the link.
Pure solid iodine will sublimate directly into a gas. At normal conditions it has no liquid state. The gas will be purple in color.
iodine is the only halogen in solid form. so it is the halogen which gives violet vapours on sublimation...
The appearance of iodine crystals: lustrous, metallic, gray.
iodine
iodine is soluble in CHCl3. Liquid become purple in color.
Atoms and crystalline
Iodine and ammonium salts sublime, their vapours then turn back into solids when cooled down. To see the sublimation, heat some iodine in a china dish and place a funnel upside down above the vapours (violet). The heated vapours become solid on contact with the funnel wall.
when iodine is heated it gives voilet vapours
iodine is the only halogen in solid form. so it is the halogen which gives violet vapours on sublimation...
violet vapours
Examples: water vapours, nitrogen, helium, iodine vapours, oxygen, xenon etc.
Iodine is added as a mordant to enhance crystal violet staining by forming a crystal violet-iodine complex.
Iodine crystal is solid Iodine. Iodine solution is when Iodine crystals are dissolved in water.
iodine is made from diatomic iodine molecules,the two iodine atoms are covalently bonded with each other.the iodine molecules have dispersion forces so,the crystal is made from the dispersion forces between the iodine molecule.
it has molecular crystals
Iodine vapours can be used as spray reagent in TLC
The appearance of iodine crystals: lustrous, metallic, gray.
iodine