motscroisés.fr n'est pas affilié à SCRABBLE®, Mattel®, Spear®, Hasbro®, Zynga® with Friends de quelque manière que ce soit. Le mot est valide au scrabble 1 court extrait de l’ODS (ODS est l’acronyme du dictionnaire officiel du scrabble.) Plutonium is the chemical element with the atomic number 94 and chemical symbol Pu.It is a highly radioactive metal, and is the metal used in most nuclear weapons.The chemical element plutonium has some different isotopes.The most important isotope of plutonium is 239 Pu (or plutonium-239). The majority of plutonium isotopes are short-lived on a geological timescale. The community is free to try to help in any thread. Plutonium is the heaviest primordial element by virtue of its most stable isotope, plutonium-244, whose half-life of about 80 million years is just long enough for the element to … The scientists were Glenn T. Seaborg, Joseph W. 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Plutonium belongs to the class of elements called transuranic elements whose atomic numberis higher than 92, the atomic number of uranium. The element is used in nuclear weapons as it is a key fissile component and because of its easier availability and ease of fission. Uranium is the main source of obtaining Plutonium which is obtained by the irradiation of. Les solutions pour la définition PLUTONIUM pour des mots croisés ou mots fléchés, ainsi que des synonymes existants. My ping is so hard. Nombre de lettres. 2 synonyms for plutonium: atomic number 94, Pu. Exemple: "P ris", "P.ris", "P,ris" ou "P*ris" Rechercher. Building on many years of research and development, Plutonium delivers a solid and refreshing gaming experience like none other. Certain Facts About Plutonium. What are synonyms for plutonium? It is high even at low temperatures. Définition ou synonyme. Atomic number: 94 2. Plutonium is very dense. La solution à ce puzzle est constituéè de 2 lettres et commence par la lettre P Les solutions pour LE PLUTONIUM de mots fléchés et mots croisés. Download Plutonium for free. When operating, a typical 1000 MWe nuclear power reactor contains within its uranium fuel load several hundred kilograms of plutonium. Howard, in Encyclopedia of Materials: Science and Technology, 2001. Genom den intensiva alfastrålningen blir ett stycke av denna isotop upphettat till vitglödning. Your email address will not be published. Request support for the Plutonium T6 client, please wait at-least 1 day for a reply, it can get busy. Did you know that several elements on the periodic table are named after planets and other celestial bodies in our solar system? Watch Queue Queue Georgia Powell on March 20, 2017 11:23 pm. It was first produced in the year 1960. Pluriel : PLUTONIUMS 3 courts extraits du WikWik.org (WikWik est une base de données en ligne des mots définis sur les Wiktionnaires français, anglais, espagnol, italien, etc.). Plutonium increases in density when it melts by 2.5%, but it has a very high surface tension and viscosity when near its melting point compared to other metals. Les solutions pour la définition SYMBOLE CHIMIQUE DU PLUTONIUM pour des mots croisés ou mots fléchés, ainsi que des synonymes existants. Those rods can be reprocessed into weapons-grade plutonium, enough for potentially three nuclear bombs. 3. Mediadico Anagrammes Mots Proches plutonium 1 : Plutonium 239, fissile. Plutonium Sujet et définition de mots fléchés et mots croisés ⇒ PLUTONIUM sur motscroisés.fr toutes les solutions pour l'énigme PLUTONIUM avec 2 lettres. Lettres connues et inconnues Entrez les lettres connues dans l'ordre et remplacez les lettres inconnues par un espace, un point, une virgule ou une étoile. The 2+ oxidation state also occurs in complexes. Near its melting point, liquid plutonium also exhibits higher-than-usual viscosity and surface tension for a metal. 239 U decays (negative beta decay) to 239 Np (neptunium), whose half-life is 2.36 days. Plutonium is the second transuranic element with an atomic number of 94 and part of the actinide group of the periodic table. Fast-breeder reactors require large quantities of plutonium. Essentially all transuranic materials in existence are manmade. Plutonium (Pu), radioactive chemical element of the actinoid series of the periodic table, atomic number 94. Reply . 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 deadly and plutonium dust can kill about 2 million people. Plutonium does have a metallic taste,an that is because it is formed in lead an Cooper elements,and one thing most people are not aware of is that plutonium is only found in the south Western hemisphere. One of its isotope Plutonium-239 is used in new generation nuclear weapons. Here are the properties of plutonium, according to the Los Alamos National Laboratory: 1. It is an actinide metal with a silvery-gray appearance but when oxidized it forms a dull coating. 5. 11744 Posts. Plutonium forms intermediate compounds and alloys with most metals. Plutonium offers a unique Black Ops 2 & Modern Warfare 3 experience. Ici vous pouvez proposer une autre solution. A PHP Content Management System based on a system of hierarchical nodes, each of which can have an arbitrary number of subnodes, as well as several "views" allowing various different methods of viewing the subtree from any node. Required fields are marked *. Plutonium is named after planet Pluto similar to its predecessor neptunium named after the planet Neptune. Let's begin by learning about how this element was discovered. Plutonium in the environment since the mid-20th century has primarily been due to human activity. Plutonium is a fuel used to produce nuclear energy. PLUTONIUM n.m. Métal radioactif. At the nuclear reprocessing plant they extract plutonium from spent atomic fuel rods. Sign in to like videos, comment, and subscribe. Plutonium increases in density when it melts by 2.5%, but it has a very high surface tension and viscosity when near its. All 15 plutonium isotopes are radioactive, because they are to some degree unstable and therefore decay, emitting particles and some gamma radiation as they do so. On a trouvé 1 solutions pour: It reacts with hydrogen and nitrogen. Since plutonium is a man-made material, its extractive metallurgy is confined to the processing of plutonium metal and salts produced in nuclear reactors. Plutonium is a radioactive chemical element with the symbol Pu and atomic number 94. Atomic symbol: Pu 3. Plutonium en 2 lettres. It was isolated and was used to create a nuclear bomb “Fat Man” that was dropped on Nagasaki during the second world war. Tous les sujets qui contiennent 'Plutonium', nouvelle proposition de solution pour "Plutonium". Plutonium has 15 isotopes with mass numbersranging from 232 to 246. Plutonium is a silvery metal that takes ... 2 lettres: metal: 5 lettres: Qu'est ce que je vois? S.M. Sign in. 2 Anagrammes de plutonium. Its longest-lived isotope is Pu 244 with a … [1] It has been argued that some natural plutonium (the very long lived 244 Pu isotope) can be found in nature. The year was 1940. Isotopes of the same element have the same number of protons in their nuclei but differ by the number of neutrons. The increase in density is about 2.5%. The resistivity of plutonium is very high at room temperature. 239 Np decays (negative beta decay) to 239 Pu . Boiling point: 5,842 F (3,228 C) Learn more. 6. XxFrankito69xX, BO2 Server Hosting Support a toxic metallic element that exists in two allotropic forms and occurs principally in stibnite. Plutonium 238 is one of the most toxic substances known to man. : And they have reactivated a mothballed nuclear reactor that can produce weapons-grade plutonium. Plutonium (Pu) has no stable isotopes.A standard atomic mass cannot be given. Pas de bonne réponse? 2. The combined effect of the atomic bomb’s impact and radioactive after-effects claimed the lives of around 80,000 people. Mediadico Usages Mots Proches Nombre de lettres : 3 Usages de plutonium. Antonyms for plutonium. 2 Plutonium. It was used in the first atomic bombs. Plutonium-238 has a half-life of 87.74 years [1] and emits alpha particles.Pure Pu-238 for radioisotope thermoelectric generators which power some spacecraft is produced by neutron capture on neptunium-237 but plutonium from spent nuclear fuel can contain as much as a few percent of Pu-238, from either 237 … Plutonium pyrophoricity can cause it to look like a glowing ember under certain conditions. Isotopen 238 Pu är kortlivad med en halveringstid av 88 år. : Operating from 1950 until the fire in 1957, they converted uranium to weapons-grade plutonium for nuclear bombs. It is high even at low temperatures. plutonium meaning: 1. a chemical element that is a metal used in the production of nuclear power, and in nuclear…. Découvrez les bonnes réponses, synonymes et autres types d'aide pour résoudre chaque puzzle Higher isotopes of plutonium ( 240 Pu, 241 Pu and 242 Pu) are created by also by neutron radiative capture, but in this case an absorber must be the plutonium … The stable form is a brittle silvery-white crystalline metal that is added to alloys to increase their strength and hardness and is used in semiconductors. For example, neptunium is named after Neptune and uranium named after Uranus. This element comprises of four oxidation states and six allotropes. Melting point: 1,184 F (640 C) 5. The primary factor for the production of plutonium ingot is the recovery of plutonium from the reactants. 2958 Topics. Plutonium definition: Plutonium is a radioactive element used especially in nuclear weapons and as a fuel in... | Meaning, pronunciation, translations and examples Plutonium definition is - a radioactive metallic element similar chemically to uranium that is formed as the isotope 239 by decay of neptunium and found in minute quantities in pitchblende, that undergoes slow disintegration with the emission of an alpha particle to form uranium 235, and that is fissionable with slow neutrons to yield atomic energy. The metal tends to get warm during alpha decay, to such an extent that it is possible to boil water when the element is present in large amounts. Since the chemical characteristics of an element are governed by the number of pr… All plutoniu… L'Utilisation de ces marques sur motscroisés.fr est uniquement à des fins d'information. Unlike most substances, plutonium increases in density as it melts. Pu(VII) is green. Synonyms for plutonium in Free Thesaurus. Note this oxidation state is uncommon. Plutonium isn’t of much use in any application due to its radioactive nature. Transuranium elements like Neptunium, Americium, Curium along with Plutonium are a radiological hazard and must be handled carefully with precaution. Plutonium was first produced by Glenn T. Seaborg, Joseph W. Kennedy, Edward M. McMillan and Arthur C. Wohl by bombarding an isotope of uranium, uranium-238, with deuterons that had been accelerated in a device called a cyclotron.This created neptunium-238 and two free neutrons.Neptunium-238 has a half-life of 2.1 days and decays into plutonium-238 through beta decay. It takes 24,110 years for half of a sample of plutonium-239 to decay, which is called its half-life. It was first produced in the year 1960. ‘The amount of plutonium you need for a bomb is the size of a grapefruit and weighs about 20 pounds.’ ‘Part of the research involved injecting a number of people with radioactive plutonium.’ ‘No one is proposing to make bombs out of the small amount of plutonium produced.’ The resistivity of plutonium is very high at room temperature. Plutonium definition, a transuranic element with a fissile isotope of mass number 239 (plutonium 239 ) that can be produced from non-fissile uranium 238, as in a … One of the main applications of this element is as a source of energy. Experience the best CoD has to offer, with a grain of nostalgia! Your email address will not be published. Plutonium is formed in nuclear power reactors from uranium-238 by neutron capture. avec 2 lettres, Solutions pour: Plutonium - mots fléchés et mots croisés. Like all other heavy elements, plutonium has a number of isotopes, differing in the number of neutrons in the nucleus. The atomic number of plutonium is 94. Grâce à vous la base de définition peut s’enrichir, il suffit pour cela de renseigner vos définitions dans le formulaire. Plutonium-238. Atomic weight: 244 4. While no longer considered a planet, Pluto (now deemed a dwarf planet) is the namesake of plutonium, which is the focus of this lesson. A naturally radioactive, silvery, metallic transuranic element, occurring in uranium ores and produced artificially by neutron bombardment of uranium. Aide mots fléchés et mots croisés. 7. Part of the actinides in the environment series.. 4.