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  2. Rhodium - Wikipedia

    en.wikipedia.org/wiki/Rhodium

    Rhodium is a hard, silvery, durable metal that has a high reflectance. Rhodium metal does not normally form an oxide, even when heated. [25] Oxygen is absorbed from the atmosphere only at the melting point of rhodium, but is released on solidification. [26] Rhodium has both a higher melting point and lower density than platinum.

  3. List of timelines of World War II - Wikipedia

    en.wikipedia.org/wiki/List_of_timelines_of_World...

    Timeline of Sweden during World War II (1939–1945) Timeline of the Netherlands during World War II (1939–1945) Chronology of the liberation of Dutch cities and towns during World War II; Chronology of the liberation of Belgian cities and towns during World War II; Timeline of the Manhattan Project (1939–1947) Timeline of air operations ...

  4. Timeline of World War II (1939) - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_World_War_II...

    This is a timeline of events of World War II in 1939 from the start of the war on 1 September 1939. For events preceding September 1, 1939, see the timeline of events preceding World War II. Germany's invasion of Poland on 1 September 1939 brought many countries into the war. This event, and the declaration of war by France and Britain two days ...

  5. Rhodplumsite - Wikipedia

    en.wikipedia.org/wiki/Rhodplumsite

    Rhodplumsite is a rare rhodium-lead sulfide mineral, chemical formula Rh 3 Pb 2 S 2. [2] [3] It was originally discovered within a platinum nugget, in grains up to 40 μm in size. Its name originates from its composition; rhodium and lead (plumbum in Latin). Although this mineral contains large amounts of rhodium, it is not an economically ...

  6. Synthesis of precious metals - Wikipedia

    en.wikipedia.org/wiki/Synthesis_of_precious_metals

    If the rhodium metal was then left for 20 years after fission, the 13.3 grams of rhodium metal would contain 1.3 kBq of 102 Rh and 500 kBq of 102m Rh. Rhodium has the highest price of these precious metals ($440,000/kg in 2022 [ 3 ] ), but the cost of the separation of the rhodium from the other metals needs to be considered [ editorializing ...

  7. Timeline of World War II (1945–1991) - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_World_War_II...

    This is a timeline of the events that stretched over the period of late World War II, its conclusion, legal aftermath, with the inclusion of the Cold War, from January 1945 to December 1991. January 1945

  8. Wikipedia:Contents/History and events/Outlines - Wikipedia

    en.wikipedia.org/wiki/Wikipedia:Contents/History...

    The Soviet Union was a one-party state, governed by the Communist Party with Moscow as its capital. It was a major ally during World War II, a main participant in the Cold War, and it grew in power to become one of the world's two superpowers (the other being the United States). The Soviet Union collapsed in 1991.

  9. Outline of World War II - Wikipedia

    en.wikipedia.org/wiki/Outline_of_World_War_II

    World War II, or the Second World War was a global military conflict that was fought between September 1, 1939, and September 2, 1945. The war pitted two major military alliances against each other: the Allies of the United States, Soviet Union , United Kingdom, China and others against the Axis of Germany , Japan , Italy and others .