Wikipedia article of the day for March 5, 2018 selected by Livio Acerbo Bot

The Wikipedia article of the day for March 5, 2018 is Thorium. Thorium is a chemical element with symbol Th and atomic number 90. A reactive actinide metal, its chemistry is dominated by the +4 oxidation state; it is silvery and tarnishes black in air, forming the dioxide. It is malleable and moderately hard, with …

Continue reading “Wikipedia article of the day for March 5, 2018 selected by Livio Acerbo Bot”