Which are the elements which direcly sublimes

  • Context: High School 
  • Thread starter Thread starter Prins
  • Start date Start date
  • Tags Tags
    Elements Sublimation
Join the discussion
Registration is free. Ask a follow-up in this thread, or start your own.
Sign up Log in
3 replies · 6K views
Prins
Messages
18
Reaction score
2
I know that Arsenic sublimes directly when heated. So I want to know which other elements like this sublimates on heating throughout the periodic table. I also know dry ice.
thanks
 

Discussion

Physics news on Phys.org
Prins said:
I know that Arsenic sublimes directly when heated. So I want to know which other elements like this sublimates on heating throughout the periodic table. I also know dry ice.
Dry ice is not an element. Otherwise, all substances can sublimate: it is just a question of pressure.
 
At ambient pressure, the most well known example is probably iodine. You can see the vapour as it is violet and also observe new crystals forming on colder places of the vial.
 
Most materials have a point called the triple point below which they're all sublime. Check for phase diagrams of water, oxygen, nitrogen... They're all similar. These diagrams can also reveal weird things like how to obtain hydrogen as metal. Now in the US they have also claimed to have obtained metallic carbon, but this without the condition of excessive pressure.