Thallium is a chemical element with symbolTl and atomic number81. This soft gray post-transition metal is not found free in nature. When isolated, it resembles tin, but discolors when exposed to air. Chemists William Crookes and Claude-Auguste Lamy discovered thallium independently in 1861, in residues of sulfuric acid production. Both used the newly developed method of flame spectroscopy, in which thallium produces a notable green spectral line. Thallium, from Greekθαλλός, thallos, meaning "a green shoot or twig," was named by Crookes. It was isolated by both Lamy and Crookes in 1862; Lamy by electrolysis and Crookes by precipitation and melting of the resultant powder. Crookes exhibited it as a powder precipitated by Zinc at the International exhibition which opened on the first of May, that year.
Thallium tends to oxidize to the +3 and +1 oxidation states as ionic salts. The +3 state resembles that of the other elements in thallium's group (boron, aluminum, gallium, indium). However, the +1 state, which is far more prominent in thallium than the elements above it, recalls the chemistry of alkali metals, and thallium(I) ions are found geologically mostly in potassium-based ores, and (when ingested) are handled in many ways like potassium ions (K+) by ion pumps in living cells.
Thallium (Tl) has 37 isotopes with atomic masses that range from 176 to 212. 203Tl and 205Tl are the only stable isotopes and 204Tl is the most stable radioisotope with a half-life of 3.78 years. 207Tl, with a half-life of 4.77 minutes, has the longest half-life of naturally occurring radioisotopes.
Thallium-202 (half-life 12.23 days) can be made in a cyclotron while thallium-204 (half-life 3.78 years) is made by the neutron activation of stable thallium in a nuclear reactor.
In fully ionized state, the isotope 205Tl becomes beta-radioactive, decaying to 205Pb. It means that in fully ionized state thallium has only one stable isotope, 203Tl.
The scent grows richer He knows he must be near He finds a long passageway Lit by chandelier Each step he takes The perfumes change From familiar fragrance To flavors strange A magnificent chamber Meets his eye Inside, a long rose water pool Is shrouded by fine mist Stepping in the moist silence With a warm breeze he's gently kissed Thinking he is quite alone He enters the room, as if it were his own But ripples on the sweet pink water Reveal some company unthought of Rael stands astonished Doubting his sight Struck by beauty Gripped in fright Three vermilion snakes Of female face The smallest motion Filled with grace Muted melodies Fill the echoing hall But there is no sign of warning In the siren's call "Rael welcome We are the Lamia of the pool We have been waiting For our waters to bring you cool" Putting fear beside him He trusts in beauty blind He slips into the nectar Leaving his shredded clothes behind With their tongues They test, taste and judge all that is mine They move in a series of caresses That glide up and down my spine As they nibble the fruit of my flesh I feel no pain Only a magic That a name would stain With the first drop Of my blood in their veins Their faces are convulsed In mortal pains The fairest cries, "We all Have loved you Rael'" Each empty snakelike body floats Silent sorrow in empty boats A sickly sourness fills the room The bitter harvest of a dying bloom Looking for motion I know I will not find I stroke the curls now turning pale In which I'd lain entwined O Lamia, your flesh that remains I will take as my food It is the scent of garlic that lingers On my chocolate fingers Looking behind me The water turns icy blue The lights are dimmed
<p>LAHORE, (UrduPoint / PakistanPointNews - 2nd Jan, 2025) The only Thallium Scan GammaCamera Electrophysiology equipment provided for heart patients' treatment at PunjabInstitute of ...
A man accused of double murder in India told police he was inspired by former Iraqi dictator Saddam Hussein when he poisoned his wife and her parents with thallium, a substance used in rodent and insect poisons.
Currently, the amount of thallium (element symbol TI), which is considered the most toxic metal for mammals, remains low in Baltic seawater ... "Anthropogenic activities release considerable amounts of toxic thallium annually.
In Mahagaon village, two women allegedly killed five family members by lacing their food with poison.�Maitri Porecha�reports on the string of murders in Maharashtra, which have left the police shocked and the village fearful ....
The Gadchiroli police have made their third arrest in the Thallium poisoning case in which five members of a family were killed ... We are trying to ascertain whether the procedure was followed in procuring Thallium from the company.\u201d .
