Answer:
For sublimation to occur, the following conditions must be met (check explanation):
Step-by-step explanation:
The substance must be in a solid phase at the beginning of the process.
The substance must be placed in an environment with a temperature and pressure such that it can exist in both a solid and a gas phase at the same time.
The substance must be able to break its bonds with other molecules and transfer to a gas phase directly from the solid phase, without ever becoming a liquid.
The vapor pressure of the substance at the triple point must equal the atmospheric pressure, so that the substance can evaporate from the solid phase and become a gas.