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Color centers in alkali halides are defects in the crystal lattice that result from the absence of an alkali metal atom or halide ion, leading to the creation of an electron trap or vacancy. These defects can absorb specific wavelengths of light, resulting in the coloration of the material. Common examples include the F-center, which forms when an electron occupies a vacancy left by a halide ion, imparting a characteristic color to the crystal. The presence and type of color centers can significantly influence the optical properties of the alkali halide.
What else can I help you with?
What color would universal indicator in strong alkali?
red
Is sodium a alkali earth metals?
Sodium nitrate is not alkali. It is a neutral compound.
What is use of hypo in photography?
It removes undeveloped silver halides from photographic emulsions. This leaves the silver behind, giving you a prnt that won't eventually turn black (because silver halides will eventually turn black on their own) or a negative light will pass through.
Are alkali and alkaline earth metals are not reactive?
No. The alkali and alkaline earth metals are very reactive.
Does alkali has a pH of over 12?
Some do. But all alkali have a pH value of more than 7.
Why halides of berilium fume in moist air but other alkali metals do not?
Beryllium halides fume in moist air because they form hydrolysis products, such as beryllium hydroxide, which are volatile and can be observed as fumes. Alkali metals do not fume in moist air because their halides are typically more stable and less prone to hydrolysis.
What are the popular electrolyte chemicals manufactured in the chemical industry?
For example halides of alkali metals.
What has the author Richard Milstein written?
Richard Milstein has written: 'A kinetic study of the alkali halides'
Why presence of salts hasten rusting?
Halogens ions from alkali metals halides have a corrosive effect on materials.
Why KBr using in IR?
KBr is transparent to IR radiation, most alkali halides are transparent in ir
What has the author Wenhong Yan written?
Wenhong Yan has written: 'Mass spectrometric studies on aryltin compounds and alkali halides'
Will caesium astatide be soluble in water?
Yes, cesium astatide (CsAt) is expected to be soluble in water due to the high solubility of alkali metal halides in general. Alkali metal halides like cesium chloride are known to be highly soluble in water, and given the similar nature of astatide ion to halide ions, CsAt is likely to exhibit similar solubility properties.
What has the author Frank Paul Tully written?
Frank Paul Tully has written: 'Crossed molecular beam study of the collision-induced dissociation of alkali halides'
What is a group name for NaF NaCl NaBr and NaI?
The group name for NaF, NaCl, NaBr, and NaI is "alkali metal halides" as they all consist of an alkali metal (Na) paired with a halogen (F, Cl, Br, I).
Is sodium iodide water soluble?
Yes. Simple alkali metal salts tend to be soluble with extremely few exceptions; most halides are likewise soluble. An alkali metal halide, such as sodium iodide, should be expected to be extremely soluble in water.
What elements react the best with the alkali metals?
Non metals form ionic bonds with metals. Non metals gain the electrons while metals loose. Alkali metals reacts with halogen family in efficient manner.
What colour is methyl violet in alkali?
Methyl violet appears as a greenish-blue color in alkali.
