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ESTADOS ALOTROPICOS DEL CARBONO PDF

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Carbono. Variedades alotrópicas: grafito, diamante, grafeno, nano tubos de carbono En general los cambios de estado de agregación de la materia o de sus 28 están en condiciones de ambiente de presión alotrópicos: Li, Be, Na, Ca, Sr. El carbono es un elemento químico no metálico y sólido que se halla en ciertos compuestos inorgánicos y en todos los orgánicos. Existen distintos tipos de. Se conocen varios ‘alótropos del oxígeno. entre los cuales el más familiar es el oxígeno El oxígeno singlete (O2), cualquiera de los dos estados metaestables de oxígeno molecular. El tetraoxígeno (O4), otra forma metaestable. Compuesto .

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EL CARBONO by diego herrera on Prezi

Plutonium An Entity of Type: Im Periodensystem steht es in der Gruppe der Actinoide 7. Plutonium ist ein giftiges und radioaktives Schwermetall.

Benannt wurde es nach dem Zwergplaneten Pluto. Es ist hinsichtlich der Ordnungszahl das schwerste in der Natur vorkommende Element. Dabei wird es aber nur in kleinsten Spuren in sehr alten Gesteinen gefunden.

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So war das Spaltmaterial der Atombombe, die am 9. August auf Nagasaki abgeworfen wurde, Plutonium.

Estas propiedades hacen que manipular plutonio sea peligroso. La presencia de plutonio limita el uso de muestras para armas o combustible nuclear y determina su grado.

Quiz Cuanto sabes de quimica. 1º bachillerato. Ramses Perez He

Eatados plutonio fue sintetizado por primera vez en por un equipo dirigido por Glenn T. Seaborg y Edwin McMillan en el laboratorio de la Universidad de California, Berkeley bombardeando uranio con deuterio. Posteriormente se encontraron trazas de plutonio en la naturaleza. Otras fuentes de plutonio en el medio ambiente son consecuencia de las numerosas pruebas nucleares en la superficie ahora prohibidas.

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Het is een zilverwit actinide. Seaborga w roku. Uma equipe liderada por Glenn T. It is an actinide metal of silvery-gray appearance that tarnishes when exposed to air, and forms a dull coating carhono oxidized. The element normally exhibits six allotropes and four oxidation states. It reacts with carbon, halogens, nitrogen, silicon and hydrogen. It is radioactive and can accumulate in bones, which makes the handling of plutonium dangerous.

Plutonium was first produced and isolated on December 14, by Dr. ddel

McMillan, and Arthur C. Wahl by deuteron bombardment of uranium in the inch cyclotron at the University of California, Berkeley. They first synthesized neptunium half-life 2. Uranium had been named after the planet Uranus and neptunium after the planet Neptune, and so element 94 was named carbbono Pluto.

Wartime secrecy prevented them from announcing the discovery until Plutonium is the heaviest primordial element by virtue of its most stable isotope, plutonium, whose half-life of about 80 million years is just long enough for the element to be found in trace apotropicos in nature. Plutonium is much more common on Earth since as a product of neutron capture and beta decay, where some of the neutrons released by the fission process convert uranium nuclei into plutonium Both plutonium and plutonium are fissile, meaning that they can sustain a nuclear chain reaction, leading to applications in nuclear weapons and nuclear reactors.

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Plutonium exhibits a high rate of spontaneous fission, raising the neutron flux of any sample containing it.

The presence of plutonium limits a plutonium sample’s usability for weapons or its quality as reactor fuel, and the percentage of plutonium determines its grade weapons-grade, fuel-grade, or reactor-grade. Plutonium has a half-life of 88 years and emits alpha particles. It is a heat source in radioisotope thermoelectric generators, which are used to power some carbno.

Plutonium isotopes are expensive and inconvenient to separate, so particular isotopes are usually manufactured in specialized reactors. Producing plutonium in useful quantities for the first time was a major part of the Deo Project during World War II that developed the first atomic bombs.

The Fat Man bombs used in the Trinity nuclear test in Julyand in the bombing of Nagasaki in Augusthad plutonium cores. Human carblno experiments studying plutonium were conducted without informed consent, and several criticality accidents, some lethal, occurred after the war.

Disposal of plutonium waste from nuclear power plants and dismantled nuclear weapons built during the Cold War is a nuclear-proliferation and environmental concern. Other sources of plutonium in the environment are fallout from numerous above-ground nuclear tests, now banned.