Question

whad do you observe when iodine crystals are heated in a test tube

Answer 1

When Iodine crystals are heated, the van der waals are easily overcome and the molecule breaks into gas phase. They sublime and form a purple colored dense vapor.

Hope it helps you my dear friend

Answer 2

When Iodine crystals are heated, the van der waals are easily overcome and the molecule breaks into gas phase. They sublime and form a purple colored dense vapor.