A report on PhosphorusIodine and Radioactive tracer

White phosphorus exposed to air glows in the dark
Violet iodine vapour in a flask.
The tetrahedral structure of P4O10 and P4S10.
I2•PPh3 charge-transfer complexes in CH2Cl2. From left to right: (1) I2 dissolved in dichloromethane – no CT complex. (2) A few seconds after excess PPh3 was added – CT complex is forming. (3) One minute later after excess PPh3 was added, the CT complex [Ph3PI]+I− has been formed. (4) Immediately after excess I2 was added, which contains [Ph3PI]+[I3]−.
A stable diphosphene, a derivative of phosphorus(I).
Structure of solid iodine
Robert Boyle
Iodine monochloride
Guano mining in the Central Chincha Islands, ca. 1860.
Structure of iodine pentoxide
Mining of phosphate rock in Nauru
Structure of the oxidising agent 2-iodoxybenzoic acid
Match striking surface made of a mixture of red phosphorus, glue and ground glass. The glass powder is used to increase the friction.
Testing a seed for starch with a solution of iodine
Phosphorus explosion
Diatrizoic acid, an iodine-containing radiocontrast agent
The thyroid system of the thyroid hormones T3 and T4
Comparison of the iodine content in urine in France (in microgramme/day), for some regions and departments (average levels of urine iodine, measured in micrograms per liter at the end of the twentieth century (1980 to 2000))

Radioisotopes of hydrogen, carbon, phosphorus, sulfur, and iodine have been used extensively to trace the path of biochemical reactions.

- Radioactive tracer

, a beta-emitter (1.71 MeV) with a half-life of 14.3 days, which is used routinely in life-science laboratories, primarily to produce radiolabeled DNA and RNA probes, e.g. for use in Northern blots or Southern blots.

- Phosphorus

Iodine-131 is also used as a radioactive tracer.

- Iodine

Phosphorus can reduce elemental iodine to hydroiodic acid, which is a reagent effective for reducing ephedrine or pseudoephedrine to methamphetamine.

- Phosphorus

Phosphorus can reduce elemental iodine to hydroiodic acid, which is a reagent effective for reducing ephedrine or pseudoephedrine to methamphetamine.

- Iodine
White phosphorus exposed to air glows in the dark

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