Thorium: Revision history

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3 May 2024

  • curprev 04:4304:43, 3 May 2024‎ Ai talk contribs‎ 3,069 bytes +3,069‎ Created page with "==Introduction== Thorium is a weakly radioactive metallic chemical element with the symbol Th and atomic number 90. It is a silvery, lustrous metal that is soft enough to be cut with a knife. Thorium is electronegative, and it is resistant to corrosion in air but dissolves readily in acids. ==History== Thorium was discovered in 1828 by the Norwegian mineralogist Esmark, who found an unknown minera..."
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