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tellurium thallium industri

tellurium thallium industri

Tellurium - Wikipedia

Tellurium is a chemical element with the symbol Te and atomic number 52. It is a brittle, mildly toxic, rare, silver-white metalloid. Tellurium is chemically related to selenium and sulfur, all three of which are chalcogens. It is occasionally found in native form as elemental crystals.

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Pronunciation: /tɪˈljʊəriəm/ ​(tə-LEWR-ee-əm)

Thallium - Wikipedia

Thallium is a chemical element with the symbol Tl and atomic number 81. It is a gray post-transition metal that is not found free in nature. When isolated, thallium 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 .

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Pronunciation: /ˈθæliəm/ ​(THAL-ee-əm)

Tellurium - Periodic Table of Elements and