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Thallium   Listen
noun
Thallium  n.  (Chem.) A rare metallic element of the aluminium group found in some minerals, as certain pyrites, and also in the lead-chamber deposit in the manufacture of sulphuric acid. It is isolated as a heavy, soft, bluish white metal, easily oxidized in moist air, but preserved by keeping under water. Symbol Tl. Atomic weight 203.7.





Collaborative International Dictionary of English 0.48


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"Thallium" Quotes from Famous Books



... addition of lead or other heavy metals (such as thallium) makes the product very soft and also very subject to attack by gases such as are always present in the atmosphere of cities. This softness causes the stones to scratch readily so that when worn they soon lose their polish and with the loss of polish they lose their beauty. The ...
— A Text-Book of Precious Stones for Jewelers and the Gem-Loving Public • Frank Bertram Wade


Words linked to "Thallium" :   zinc blende, Tl, metal, metallic element, sphalerite


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