What does a sodium iodide crystal do?

Sodium Iodide (Tl) – NaI(Tl) – is a well established and the most extensively used scintillator. It is used for detecting gamma rays of low and intermediate energies. It has a high level of optical output and relatively inexpensive. It is available in both single crystal and polycrystalline formats.

Why is sodium iodide doped with thallium?

The doping of the NaI crystal with thallium improves the scintillation efficiency by improving the light emission due to the improved recombination by light emission of electrons and holes at the dopant site.

What sort of bond holds sodium iodide together?

ionic compound
Sodium iodide (chemical formula NaI) is an ionic compound formed from the chemical reaction of sodium metal and iodine. Under standard conditions, it is a white, water-soluble solid comprising a 1:1 mix of sodium cations (Na+) and iodide anions (I−) in a crystal lattice.

What happens when sodium reacts with iodine?

All halogens react with sodium to produce sodium halides. Hot sodium will also burn in bromine or iodine vapor to produce sodium bromide or sodium iodide. Each of these reactions produces an orange flame and a white solid.

How is bromopropane used in the elimination reaction?

The elimination reaction involving 2-bromopropane and hydroxide ions. The facts. 2-bromopropane is heated under reflux with a concentrated solution of sodium or potassium hydroxide in ethanol.

What kind of liquid is 1-bromopropane used for?

1-Bromopropane is a colorless liquid. Commercial 1-bromopropane includes not only 1-bromopropane, but also additives that improve its performance in the desired application and stabilizers to inhibit decomposition.1-Bromopropane was originally used in the production of pesticides, flavors and fragrances, pharmaceuticals, and other chemicals.

Which is better bromide or sodium iodide in acetone?

Explain your reasoning! (a) CH3CH2CH2CH2Br or CH3CH2CH2CH2I with sodium cyanide in dimethly sulfoxide (DMSO). Iodide is a better leaving group than bromide so 1-iodobutane will react faster than 1- bromobutane (SN2 reaction mechanism) (b) 1-Chloro-2-methylbutane or 1-chloropentane with sodium iodide in acetone.

What is the ozone depletion potential of 1-bromopropane?

At the latitude of the US, 1-bromopropane has an ozone depletion potential (ODP) of 0.013 to 0.018. At tropical latitudes, 1-bromopropane has an ODP of 0.071 to 0.100, close to that of methyl chloroform and HCFC-141b. 1-Bromopropane may contribute to smog and is regulated as a volatile organic compound.