2025年1月31日 · Plutonium (Pu), radioactive chemical element of the actinoid series of the periodic table, atomic number 94. It is the most important transuranium element because of its use as fuel in certain types of nuclear reactors and as an ingredient in nuclear weapons. Plutonium is a silvery metal that takes

Although the existence of Pu-244 as an extinct radioactive element had been postulated to explain the xenon isotope ratios observed in meteorites, this is the first indication of its present existence in nature. Plutonium also exists in trace quantities in naturally occurring uranium ores. It is formed in much the same manner as neptunium: by ...

Dense silvery radioactive metallic transuranic element, belongs to the actinoids. Pu-244 is the most stable isotope with a half-life of 7.6*10^7 years. Thirteen isotopes are known. Pu-239 is the most important, it undergoes nuclear fission with slow neutrons and is hence important to nuclear weapons and reactors.

2021年1月7日 · Plutonium is a radioactive metallic element with the atomic number 94. It was discovered in 1940 by scientists studying how to split atoms to make atomic bombs. ... Pu-239 has a half-life of 24,100 years and Pu-241's half-life is 14.4 years. Substances with shorter half-lives decay more quickly than those with longer half-lives, so they emit ...

2019年9月12日 · The element symbol for plutonium is Pu, rather than Pl, because this was a more amusing, easily remembered symbol. The element was synthetically produced by Glenn T. Seaborg, Edwin M. McMillan, J.W. Kennedy, and A.C. Wahl at the University of California at Berkeley in 1940–1941.

Pu 4+ is a "hard" (ionic) cation with the largest electronic charge of plutonium ions and it forms complexes with a variety of inorganic and organic ligands. In dilute perchloric acid, Pu 4+ is un-complexed and is salmon-colored. However in concentrated acids, Pu 4+ forms anionic complexes such as: Pu(NO 3) 6 2-(dark green) and Pu(Cl) 6 2-(brick red). Pu 4+, having a …

2019年10月2日 · Plutonium is element atomic number 94 with element symbol Pu. It is a radioactive metal in the actinide series. Pure plutonium metal is silvery-gray in appearance, but it glows red in the dark because it is pyrophoric. This is a collection of plutonium element facts.

2021年5月11日 · The element symbol for plutonium is Pu instead of Pl because the element’s discoverers thought it was funny to say “Pee-You”. (Physicists have a sense of humor.) The element is named for the dwarf planet Pluto. The naming follows the trend set by the preceding elements, with uranium named for Uranus and neptunium named for Neptune.

Plutonium isotopes range in mass number from 228 to 247. Traces of plutonium isotopes Pu-238, Pu-239, Pu-240 and Pu-244 can be found naturally. Pu-244 has the longest half-life [4]. Pu-239 is the most abundantly existing isotope of plutonium, since it is purposefully manufactured for nuclear reactors and also for nuclear weaponry. REFERENCES [1].

2024年1月26日 · Pu-244 has the longest half-life at 80.8 million years, followed by Pu-242 at 373,300 years and Pu-239 at 24,110 years. The rest of the other radioactive isotopes have half-lives of fewer than 7,000 years. This element has eight meta-states as well, but none are particularly stable (all have half-lives of less than one second).