Plutonium's element symbol "Pu" was allegedly a joke implemented by it's discoverer, Glenn Seaborg. Because it’s the closest to the sun, Mercury has the fastest orbit, at 88 Earth days. Some not well know facts about Plutonium: 1. The chemical element plutonium has some different isotopes. Its melting point is 640.85°C, and its boiling point is 3,229.85°C. Pluto takes the longest time of the eight planets (248 Earth years) to orbit around the sun. The most important isotope of plutonium is 239 Pu (or plutonium-239). The atomic number of plutonium is 94, which means all of plutonium atoms possess 94 protons. The metal is chemically reactive, forming compounds with carbon , nitrogen , and silicon and the halogens. Interesting Facts About Plutonium Plutonium was first discovered in 1940 to 1941 by Glenn T. Seaborg, Edwin M. McMillan, J.W. Plutonium is a silvery metal that takes • Characteristics of Plutonium Plutonium can be found in the third group of the periodic table. Plutonium does exist in nature in very small traces in natural Uranium, larger volumes are human-created 2. It can be made from natural uranium and is fissile. ! Kennedy and A.C. Wahl at the University of California at Berkeley . Interesting Facts about Plutonium The element symbol of plutonium is Pu, instead of Pl, since this had been a more amusing, effortlessly remembered symbol. This was overlooked and added in to the periodic table. It has six allotropic forms, which vary widely in crystal structure and density. Most Plutonium is made by Uranium 238 in reactors absorbing a neutron 3. They actually submitted a documentation of their discovery but immediately withdrawn when it was found out that plutonium can undergo nuclear fission. Seaborg thought this would be funny as it sounded like "pee - you" when read allowed. • Plutonium Fuel Interesting Facts. Plutonium: Key facts. It has the symbol of “Pu” and an atomic number of 94, which means it must also have the same number of protons and electrons. Show some Plutonic love for the underdog with these interesting and surprising Pluto facts, including temperature range of the little planet, its color of sky, and much more. This bomb contained plutonium-239. It takes 24,110 years for half of a sample of plutonium-239 to decay, which is called its half-life. Facts Regarding Plutonium. Plutonium is a silvery radioactive metal that tarnishes in air to give a yellow oxide coating. For a very small period of time, Plutonium was used to power pacemakers but eventually was found to be too powerful and extremely expensive due to which it was replaced in less than a year. The reason why Plutonium is found naturally in such small trace amounts is because it's most stable isotope, Plutonium-244 has a half life of 80 million years! Fact #1: In 1945, the atomic bomb named 'Fat Man' was dropped on Nagasaki, Japan. 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