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Thallium Symbol Tl Atomic Number 81 Atomic Mass 204.37 Family Group 13 (Iiia) Aluminum Pronunciation THA-lee-um Overview Thallium is a member of the aluminum family, Group 13 (IIIA) on the periodic table. The periodic table is a chart that shows how...

Thallium is the last element in Group 13 of the periodic table, a group of elements sometimes known as the aluminum family. Its atomic number is 81, its atomic mass is 204.37, and its chemical symbol is Tl. Thallium is a heavy, bluish white metal that...

Thallium is a metal element denoted by the atomic symbol Tl. It has an atomic number of 81 and the average atomic weight of its isotopes is 204.3833. It is normally found as a bluish-gray metal that is so soft it can be cut with a knife. It has a...

Thallium (pronounced /ˈθæliəm/) is a chemical element with the symbol Tl and atomic number 81.[1] This soft gray malleable poor metal resembles tin but discolors when exposed to air. Thallium is highly toxic and is used in rat poisons and...

Thallium, bismuth superconductivity By giving the highest temperatures yet recorded for reproducible bulk superconductivity, thallium and bismuth are generating intense interest among physicists and chemists. Early this year, full superconductivity appeared at a temperature of 106 kelvins in a bismuth compound studied...

A FURTHER story about thallium, the poison believed to have been given to Alexander Litvinenko: in 1976 a 19-month-old girl from Qatar was admitted to the Hammersmith Hospital. The child was gravely ill, but her symptoms baffled medics. As luck would have it,...

Thallium is frequently referred to as the poison of choice: Only a gram of the colorless, odorless, water-soluble heavy metal can kill. It is as toxic as arsenic, and even more so than lead. Col. Alexander Litvinenko, a...

Tests confirmed Friday that two American women hospitalized after they became ill on a trip to Russia were poisoned by thallium, but the women believe it was accidental, their lawyer and the hospital said.Dr. Marina Kovalevsky, 49, and her daughter, Yana, 26, remained in fair...