What is the phase of iodine?
What is the phase of iodine?
solid
| Iodine | |
|---|---|
| Phase at STP | solid |
| Melting point | (I2) 386.85 K (113.7 °C, 236.66 °F) |
| Boiling point | (I2) 457.4 K (184.3 °C, 363.7 °F) |
| Density (near r.t. ) | 4.933 g/cm3 |
Does iodine have a liquid phase?
As Mike notes, iodine can indeed be a liquid at atmospheric pressure between 113.7 oC and 184.3 oC.
How does iodine change from solid to gas?
Iodine is a substance which is present in a crystalline form. When this iodine is heated, it converts it into a gaseous form. The sublimation of iodine takes place in the presence of air or oxygen, the particles overcome the force of attraction between them and therefore sublimation takes place.
How is iodine formed?
Now the main sources of iodine are iodate minerals, natural brine deposits left by the evaporation of ancient seas and brackish (briny) waters from oil and salt wells. Iodine is obtained commercially by releasing iodine from the iodate obtained from nitrate ores or extracting iodine vapour from the processed brine.
Is iodine a solid liquid or gas?
Iodine is a nonmetallic, nearly black solid at room temperature and has a glittering crystalline appearance. The molecular lattice contains discrete diatomic molecules, which are also present in the molten and the gaseous states. Above 700 °C (1,300 °F), dissociation into iodine atoms becomes appreciable.
Why is iodine a solid?
Despite intermolecular forces being a weak individual force of attraction, collectively they are very strong and the numerous forces between iodine molecules means that more heat energy is required to break these intermolecular forces and separate the molecules therefore iodine is a solid.
Is heating of iodine physical change?
Answer: Heating of iodine is a physical change.
What changes when iodine is heated?
The term is also used to describe the reverse process of the gas changing directly to the solid again upon cooling. An example of sublimation is seen when iodine, on being heated, changes from a dark solid to a purplish vapor that condenses directly to a crystalline solid upon striking a cool surface.
When iodine is heated it changes into which state?
Iodine is a chemical element with atomic number 53 and the symbol I. At normal conditions, it occurs as a lustrous, purple-black non-metallic solid that melts to form a deep violet liquid at 114 degrees Celsius and boils to form a violet gas at 184 degrees Celsius.