Are iodine crystals diatomic?
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.
Is iodine magnetic or nonmagnetic?
2007 Schools Wikipedia Selection. Related subjects: Chemical elements
| General | |
|---|---|
| Miscellaneous | |
| Magnetic ordering | nonmagnetic |
| Electrical resistivity | (0 °C) 1.3×107 Ω·m |
| Thermal conductivity | (300 K) 0.449 W·m−1·K−1 |
What is iodine crystal?
Iodine crystals usually are available as bluish-black or violet crystals that have a metallic luster. In its gaseous state (iodine converts to a gas at temperatures above 68°F), iodine is violet in color. Typically, iodine emits a sharp, distinct odor.
Is iodine a crystal compound?
Answer and Explanation: Iodine crystals are a pure substance because they are composed entirely of the element iodine.
Is iodine an acid or base?
Iodine is neither an acid NOR a base…..
What is iodine used for?
Iodine is a mineral found in some foods. The body needs iodine to make thyroid hormones. These hormones control the body’s metabolism and many other important functions. The body also needs thyroid hormones for proper bone and brain development during pregnancy and infancy.
Is iodine paramagnetic or diamagnetic?
Magnetic Type of the elements
| Hydrogen | Diamagnetic | Niobium |
|---|---|---|
| Sodium | Paramagnetic | Antimony |
| Magnesium | Paramagnetic | Tellurium |
| Aluminum | Paramagnetic | Iodine |
| Silicon | Diamagnetic | Xenon |
Is iodine a gas?
As a pure element, iodine is a lustrous purple-black nonmetal that is solid under standard conditions. It sublimes (changes from a solid to a gaseous state while bypassing a liquid form) easily and gives off a purple vapor. Although it is technically a non-metal, it exhibits some metallic qualities.
What are the main uses of iodine?
Today, iodine has many commercial uses. Iodide salts are used in pharmaceuticals and disinfectants, printing inks and dyes, catalysts, animal feed supplements and photographic chemicals. Iodine is also used to make polarising filters for LCD displays.
Is iodine a compound or element?
iodine (I), chemical element, a member of the halogen elements, or Group 17 (Group VIIa) of the periodic table.
What is the pH of iodine?
7.4
This pH value remains constant (7.4) if there is argon purging because the I2 that ultimately forms is sparged from the solution and caught in the thiosulfate trap. On cessation of the irradiation, the pH decreases gradually from what is believed to be hydrolysis of the I2 remaining in solution.
What is iodine made from?
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.
How can iodine be detected as a free element?
Iodine as the free element can be detected by the characteristic blue color given with a starch solution, or by the violet color of its vapor and of solutions in carbon tetrachloride or carbon disulfide. Iodine is also detected by the precipitation of yellow silver iodide, black palladium iodide, or yellow or red mercuric iodide.
Are there any non radioactive forms of iodine?
There are non radioactive and radioactive forms of iodine. Iodine is used as a disinfectant for cleaning surfaces and storage containers and is used in skin soaps and bandages, and for purifying water.
How is iodine monochloride prepared at room temperature?
Iodine monochloride and iodine monobromide may be prepared simply by reacting iodine with chlorine or bromine at room temperature and purified by fractional crystallisation. Both are quite reactive and attack even platinum and gold, though not boron, carbon, cadmium, lead, zirconium, niobium, molybdenum, and tungsten.
What kind of iodine is used in the USP Tincture?
/Iodine/ is used most frequently as the official USP tincture (2% iodine and 2% sodium iodide in 50% alcohol), but it is also available as strong iodine solution, also known as Lugol’s solution (5% iodine and 10% potassium iodide in aqueous solution). The strong iodine tincture (7%) and iodine ointment (4%) have been virtually eliminated.