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Iodine is held by the weakest bond - Van der Waals - because it is a covalent nonmetal substance.
Iodine also has low vapor pressure. Once Iodine reaches a certain point, there's not enough force holding the molecules together to even make a liquid. Instead, they escape and become a gas.
Cullen Fay
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What is the equation for iodine being heated?
iodine sublimes to form I2
Iodine sublimes to iodine vapor is physical or chemical change?
physical change
Why is liquid iodine not visible if crystals are heated in the open air?
Because Iodine, like Carbon dioxide, sublimes straight from a solid to a gas and does not have a liquid phase.
How do you separate a mixture of potassium chloride and iodine give details?
Should be by sublimation. We make use of the fact that iodine sublimes(changes to solid to gas immediately) upon heating why potassium chloride does not :D
Explain what is meant by the sublimation of iodine at 184 C?
We know that iodine's heat of sublimation is 56.94cal/g, so I believe that you can find the heat of sublimation at a specific temperature if you have a know amount of grams.
What is a nonmetal element that sublimes?
iodine?
What is the equation for iodine being heated?
iodine sublimes to form I2
Iodine sublimes to iodine vapor is physical or chemical change?
physical change
How would you separate iodine crystals from mixture of iodine and sand?
we can separate them by sublimation as iodine sublimes on heating.
What element sublimes when gently heated?
Iodine is the element that undergoes sublimation when exposed to air.
Why is iodine heated gently?
Because it sublimes that is it directly forms into a solid
What kind of solids are iodine and naphthalene?
Iodine is a chemical element; naphtalene is an organic compound. They can sublimes at room temperature.
How much energy is needed to melt 25.4grams of l2?
Iodine sublimes - it does not melt
What solid sublimes on heating?
Some solids are Carbon dioxide, Snow, Iodine and Naphthalene
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.
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).
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...
