Question

what is the change of sublimation of iodine​

Answer 1

As you cannot bring back Iodine(solid) back from the fumes, it is a physical process. As iodine is sublimating in presence of air (O2, N2…) it is a chemical process. SO, IT CAN BE SAID THAT IODINE SUBLIMATION IS A PHYSIO-CHEMICAL (or mostly physical) PROCESS.

Answer 2

As you cannot bring back Iodine(solid) back from the fumes, it is a physical process. As iodine is sublimating in presence of air (O2, N2…) it is a chemical process. SO, IT CAN BE SAID THAT IODINE SUBLIMATION IS A PHYSIO-CHEMICAL (or mostly physical) PROCESS.