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Iodine exists as a solid crystal due to its molecular structure, where diatomic iodine (I₂) molecules are held together by weak van der Waals forces. These intermolecular forces allow the solid to maintain a crystalline structure while still being susceptible to sublimation, a process where the solid transitions directly to gas without becoming liquid. The relatively low boiling point of iodine allows it to sublime at room temperature, making it unique among the halogens. Thus, when heated or exposed to low pressure, iodine readily sublimates into a violet vapor.
What else can I help you with?
When you warm the test tube crystal of iodine what is the result?
it result to the formation of metal sulfates
Which halogen goes from the solid phase directly to a gas?
Iodine is the halogen that sublimes directly from a solid to a gas at standard pressure and temperature.
What is a dark grey solid that sublimes to form a violet vapor?
Iodine ( I2 ) the fourth halogen (after F2 ,Cl2 -both gases- and Br2 -liquid- ) Iodine has a shiny, dark grey, metallic look (but it is not a metal) with crystal forms which subliMATES to violet vapour. It is slightly soluble in water, better in a Iodide solution (to form I3- complex ions) and in ethanol (red-brown tincture)
What is sublimation and give an example of a substance that sublimes?
If zinc chloride is heated strongly the solid will sublime.
When iodine sublimes it absorbs energy?
When iodine sublimes, it transitions from a solid state directly to a gaseous state without passing through a liquid phase. This process requires energy, known as the enthalpy of sublimation, which is absorbed from the surroundings. As the iodine molecules gain energy, they overcome the intermolecular forces holding them together in the solid form, resulting in the formation of gaseous iodine. This absorption of energy leads to a cooling effect in the surrounding environment.
Why iodine exist in solid state but it is a gas?
Iodine sublimes (i.e., goes from a solid to a gas) at room temperature and atmospheric pressure. However, it will exist as a solid for a very long time if it is kept in a closed container. As the iodine solid sublimes, the pressure will increase slightly within the closed container which will cause the iodine gas to reach an equillibrium state with the solid iodine (i.e., there will not be an increase in the amount of iodine gas in the container).
An element that can be a black solid or a colorless crystal?
Iodine is an element that can exist as a black solid or colorless crystal.
When you warm the test tube crystal of iodine what is the result?
it result to the formation of metal sulfates
What solid sublimes on heating?
Some solids are Carbon dioxide, Snow, Iodine and Naphthalene
Iodine liquid or solid?
Iodine is a solid at room temperature and pressure. It sublimes directly from a solid to a purple vapor without melting.
How can you separate iodine mixed with zinc oxide?
One way to separate iodine from zinc oxide is through sublimation. Since iodine sublimes at a lower temperature than zinc oxide, you can heat the mixture to a temperature where iodine sublimes, and then collect the iodine vapors while leaving behind the zinc oxide.
Can iodine ever be in the liquid state or it just sublimes on heating?
Iodine can exist as a solid, liquid, or gas. Its normally solid at STP, but with slow heating you can get it into its liquid form. It sublimes, so the heat must be well controlled. After he pours liquid bromine, this person then shows some liquid iodine.
Which halogen sublimes to violet vapours?
iodine is the only halogen in solid form. so it is the halogen which gives violet vapours on sublimation...
What is appearance crystal iodine?
The appearance of iodine crystals: lustrous, metallic, gray.
What is an element that is a shiny black solid and gives off a purple vapor when heated?
Iodine ------------------------------------------- The element you describe sounds like iodine, a good test to make sure that it is iodine is to see if the substance sublimes. This means a solid sample of iodine will turn straight from a solid into a gas with no liquid stage.
Does solid iodine give blue gas on sublimation?
Yes, solid iodine sublimes directly to a purple vapor, not blue.
Which halogen goes from the solid phase directly to a gas?
Iodine is the halogen that sublimes directly from a solid to a gas at standard pressure and temperature.
